1970 RAIII 400 Stock cam, original RA manifolds, 2.5 inch pypes downpipes into Walker/Dynomax/Thrush 2.5 Crossflow System. Very affordable with a very good fit, sound GREAT. This will be the third year I have had this system on my car and I'm very happy with it.
http://www.jegs.com/i/Dynomax/289/89021/10002/-1
take a listen
http://www.youtube.com/watch?v=T10N0...ature=youtu.be