273 Y-pipe?

Been there and done that. This is what you will have to do to assemble a 3" single exhaust with Spitfire headers that mimics a standard commando/Formula S layout. I utilized a Flowmaster 2.5" to 3" Y collector and a 3" universal pipe kit from Jeggs. I used collector flanges as shown to keep it in manageable pieces and if I ever need to remove the trans or engine I wouldn't have to drop the whole exhaust. Note the contorsions that the pipe has to do to clear the torsion bars and steering shaft. I used a stainless steel tip and a 18" glass pack muffler to build my own resonator. Every thing was aluminum coated and I had the headers and collector sections coated. Looked beautiful but the headers are already starting to show some rust formation, on the top of the pipes right at the head, and I haven't even gotten the damn thing on the highway yet.