I got a friend of mine looking to drop in a full GT exhaust from the headers back into his 6 banger mustang. I am sure a shop can do a custom job to make it work. Has anyone heard of this before. Will it be worth it?
It will work with adjustments. Labor is probally going to be a bitch conidering that you have the Y-Pipe modified and everything else, hangers added etc. But, if that is what he wants to do tell him to go for it.