Hey guys. I have a 1987 Olds Cutlass that i swapped an olds 425 bb in place of the stock 307. I put on a set of W/Z exhaust manifolds that i bought from Thornton. The car currently has the stock thm200-c and stock crossmember for single exhaust pipe. I want to run a 2-1/2 inch or maybe 2-3/4 inch dual exhaust to the back. I'm on a tight budget. My question is can i get a dual exhaust crossmember out of a junkyard car that is compatible or closely compatible with little modification. Are any other cars cross compatible with a g body Cutlass? Also i have a Chevy th350 that i want to swap in place of the th200c. I bought a cheap adapter plate with some modification of the adapter plate i did get the Chevy trans to bolt up to the olds engine but i don't know if the torque converter will work. I can see there is a very noticeable difference between a Chevy and olds torque converter. Can i use one with the olds engine or so i have to buy something Custom? Thanks