Just scored a complete 2" dual exhaust system from fellow member Budman, thanks again Bud !, and have an NOS Pair of these Dynomaxs', Part # 17742. I have limited knowledge regarding if these would be OK to install on my 2DR, '72 Satellite 318 / 904 w/ 8 3/4 3:23 SG with factory SB exhaust manifolds. Are these mufflers, which resemble more of a resonator, be OK with this combo for a daily driver ? Decibel level / non restrictive wise, etc., etc...A little thumpy rumble is OK, I guess...Thanks