Bill, in my opinion there's only one way to do it right since you don't have torsion bars or motor mounts and that is to have them custom made to fit your car. That's what I'll do next time for sure.
Another option would be to find a set of TTI 2 1/8" step headers to test fit in your car.

I've used TTI 2" underchassis headers, ProParts 2" and MadDog 2" and they were all just a huge pain with torsion bars and inner fenders.

The Hedman fenderwell headers that Sixpackgut mentioned are something that I always wanted to try as they made more power than anything else on several cars that I read about.