ya i would think they were talking about all that emissions junk on my 78 chevy suburban it has the stock 350 no mods what so ever and i got a full brand new aluminized exhaust system from LMC truck (glasspacks included) it went from exhaust manifolds to tailpipes and its all 2 1/4" pipe put bout 12" long 2 1/4" to 3" tip on the end it rumbles real nice going down the interstate at 70 mph (3,000 rpm) its a 4 speed so that helps with raping it out but with the tips on the exhuast does not snap when you down shift
Nate


Link to my photobucket for pics of my vehicles
http://s238.photobucket.com/albums/ff17/OldIronChevy/