22's and Man Boobs

I've got a 95 coupe with a turbo gsr. right now all i have is part of a 3'' down pipe for an exhaust. a buddy of mine is willing to weld up a custom 3'' exhaust from the down pipe straight out the back, no muffler or anything, just tubing and a flex pipe. I'm in the process of ordering the pipes, but i don't know what angle of bends and how many of them i need to order. if any one could tell me what i need to get or anything else i need to know, that would be balla. thanks