I've been running straights on my 37 pickup, with a 350 in it, for about 7 years. It is a little loud but it sure does rumble. I've mentioned before that I have to Smithy's to put on and may just do it this year? I persaonally think there is a lot of "mufflers" out there that sound good and a lot less expensive than those flowmasters. Flowmasters around here are 60 for the the cheap ones and 80 each for the "best" ones installed. I paid 60 for both the Smithy's. Just my .03 cent.
