Supra brakes will *not* work. Z32 300ZX brakes, however, will, apparently, assuming you're using a spacer of sorts and using proper offset (read: not stock) rims.
http://www.toyotacressida.com/forum/...pic.php?t=3587
Suspension bits will generally *not* work. Apparently, MKII Supra front springs and MKIII rears will work. Don't go to market on this one.
Keep in mind, that with coilovers, you're going to have to go with Japanese units from the X80/X81 Mark II/Chaser/Cresta, if not, DGTrials.com units that may come out soon. JDM stuff comes from the likes of Tein (Type HA) and Kei Office (now discontinued, I think). If I reckon correctly, Tein makes S-Tech springs:
http://www.toyotacressida.com/forum/...ght=tein+stech