Just some parts i've had laying around the garage for a few years ever since I sold my ttz and switched to a supra, may be of some use to you z and supra owners. All prices do not include shipping and paypal fees!
-T70 turbo, practically brand new only test fitted and ran for less than 2 miles because it was used on a ca18det which pathetically barely spooled the turbo $200 obo
-Jim Wolf upgraded ecu for na to tt conversions (Pop upgrade package, 90-94 turbo mt, 850cc injectors, federal) If the ecu is beyond your z's specs you can send it in to jim wolf to have it reprogrammed for your needs. $300 obo
-Both Intake piping for na z's $50 obo
-TT power steering pump $50 obo
-All 4 metal inlet piping to turbos $40
-(12) coilpacks $150 for (6) or $35 each
-Fan shroud $50 obo
-TT throttle cable cover $35 obo
-All 4 tt valve covers $50 obo
-Stock upper plenum for tt, great for core or polishing $70 obo