So I'm getting to the point of test fitting the engine, already intending on building my own headers/exhaust, had a look at what space I have and it seems fairly limited.

Has anyone ever been successful fitting a larger exhaust in the 33? Inside the frame, not exterior.

It seems like if I remove one of the cross braces and weld in a straight I might be able to fit what i want (2x 2.5) but that seems like a major undertaking. Any other ideas? Oval maybe?