A few years back, i put on a complete exhaust system for a small block camaro convertible from D & R Classic in Warrenville, Illinois and it fit just fine. It cost about $300 for the small block system. I live pretty close to them so I just picked it up so you would probably need to factor in freight plus a little more for the big block.
I have also bought a couple of Gardner systems and they are great but this car was a driver and I had no problems with it.
Might be an option for you.
I have also bought a couple of Gardner systems and they are great but this car was a driver and I had no problems with it.
Might be an option for you.

so actually the 'houndstooth is 'wrong'... and comfort weave is 'right'.. in terms of originality!