What type of exhaust does your 273 have??? show some photos!!!

I had a simple 2 1/4" dual exhaust with the 273 and factory manifolds in our 67 cuda. Sounded awesome.
Recently installed a 340, and went with 2 1/2" TTI head pipes and 2 1/2" Summit kit from headpipes back. Sounds great, deeper tone than previous setup. The 2 1/2" is tight, I wouldnt recommend a 3" setup unless it's absolutely required and installed by a professional. I'll get a current soundbite.