I'm looking at buyibg a 95 3000gt and was wondering if the stock manifolds fron a VR4 motor would fit the regular motor, and if not is there any way i can turbo charge it. I was aslo wondering if there were any specialty site that pretty much sell nothing but 3000gt performance parts.

Dynamic Racing (http://www.dynamicracing.com/customer/home.php)
3sx (http://www.3sxperformance.com/)
GTPRO (http://www.gtpro.com/index.cfm)
Altered Atmosphere (http://www.alteredatmosphere.com/3000gt.asp)
Import Power Online (http://www.importpoweronline.com/catalog/index.php?cPath=32)

All your questions regarding putting forced induction on a 3KGT will be HERE (http://www.3si.org/forum/forumdisplay.php?s=&daysprune=&f=53) on 3si.

To answer your question directly, YES, the twin turbo manifolds will fit on your motor as long as it is a DOHC.