We are going to try and cut a glass pack in half and remove the inside and slip it up inside the header and put a turnout on the end... if that doesn't work, I am going to look at auger style mufflers...
Sounds cool post some pics never seen it done or have done it. Been getting the rust out of mine not much there but work work . Waiting on the frame to get done going with a 4in drop in front and rear.This maybe what im looking for http://www.jegs.com/p/Car+Chemistry/744688/10002/-1/10265
Looks like a pretty good start with that coupe body... This exhaust inserts are close to what I want to do also... also google "auger style muffler" or check out these links...
This one is from the HAMB... it is a traditional hot rod forum which I am member of also... same screen name....