Suspension and rear drive line??????

I just picked up an 1980 coupe. I have been racing for years but I know nothing about the fox set up. I also have an 8.8 out of a GT need to know where to start. I need suspension and rear end able to handle 450-500 rear wheel hp. I am not driving this car on the street. I just want it to go straight. The worst part is I need to do this on a very limited budget. I have seen kits from UPR, Steeda, BBK and so on. I know about the torque boxes but I will take what info I can get!!! C-clip, spool, K-member,axles,back spacing, mini tubbing, anti- roll bars......... Thanks for your help Budget Boy!