I know there's a few people that autox/hillclimb/road race/track race their MKIII Supras

I hope... ;)

Just wanted to get some info from people that have some experience on their suspension/brake setups

Stuff like:

Springs (including rates)
Shocks
Sway bars
Chassis bracing
Weight reduction
Alignment
Wheels/Tires

Blahblah that kind of stuff. Had a MKIII for about 2 months and getting back into autox and road racing same as I did in my MR2

First look at the various classes and decide which one you can afford to modify you car to be competitive in. This will make it a lot more fun if you plan on racing. If it's just for fun on track days, this is what I'd do (if I had it to do over again):

Hardtop 89+ car
Silkroad or JIC FLT-A2's with 18/12 springs (for street/track) 20/12 for mostly track
Stock front sway bar
No rear sway bar
Nylon bushings (if you can get them) RK poly bushings if not
CP front strut tower bar
Custom built roll cage
Racing seats
JIC front upper A-arms (if track only -- you wont need them for a street/track alignment)
Kumho victoracer DOT r-compounds

Brakes:
Precision Brakes 13" front and rear kit (if <400hp and doing mostly slower tracks). They'll fit under most 17"s
Precision Brakes 14" front and rear kit (if >400hp or doing mostly faster tracks. They may fit under a very select few 17"s, but more likely 18s)


Front Alignment:
Max Caster
-2.5 camber (-3 if track only, may need JIC upper a-arms to get it)
1/16 toe OUT

Rear Alignment:
-1.5 camber (-2 if track only)
0-1/16 toe IN

I mostly only care about the feel of the car rather than winning in any classes. I only race for fun anyway

My original plan was this:

RS-R race springs
Tokico Gr2 (non-adjustable) struts
Polyurethane bushings (I later found out they're damn hard to find and damn near $400 so that's probably out of the question right now)
Rear chassis brace (just make something for an x-brace between the rear towers and the body)
KVR rotors/pads in OE size
245/40R17 in either a Potenza S-03 or possibly Pilot Sport. Although I MAY keep the stock wheels and stock tire sizing for the time being

My only problem is I'm on a budget and right now have shit all for money so everything has to be budget oriented

The Poly bushings aren't too hard to find anymore, they're now generally kept in good stock in the USA (made in Australia I believe). They are more than the energy suspension kits for "popular" applications, but they are still well worth it -- especially on a 20-year old car. But I'd recommend saving up for coilovers rather than doing the shock/strut route. They make a world of difference and you'd be hard-pressed to find someone who regrets getting coilovers instead of lowering springs... D2 will be making some that are going to be priced about the same as a set of new illumina II's and eibachs. Tein also has the SS under $1000... If you do decide to go with lowering springs, I wouldn't use the KYB GR2s with a stiff & low spring like the RS*R race because they will be underdamped and wear out quickly

How much are the poly kits? I found a set on SupraSport that were $400 and that's a little pricey after coming from an MR2 where a full poly set is under $90. They are worth it though, that's for sure

And yeah I meant Tokico Blue, not Tokico GR2. You'd recommend the KYBs instead? I didnt really get any input on the Tokicos on whether or not they would be overstressed and bust quickly like others I've seen

You make a good point on coilovers though. They're always a better idea and usually aren't much more expensive either I suppose. Do the D2s come with upper strut plates or do you have to re-use the OE ones?

D2's do come with upper strut plates and are dual-ride height adjustable (in addition to 36-position damper adjustable). The downside is that it will probably be 8 weeks before they're available.

Tokico Blues will be better with the RS*R races, I'd just stay away from the GR2...

The poly bushings are ~$400. The nylon ones are ~$700. You can buy the poly ones individually if you wanted to split up the cost over time...

At least I have some good options... at this point I haven't done any track days or autoxs, just exploring the car on the many many nice roads in BC and Washington :)

At this point I'm really happy with the car in stock form. The suspension is still really tight and the car is responsive. I need brakes ASAP, and the tires on it are shit but it's still tight and grippy enough to lead a group of MR2s without much issue :)