i want to buy a flow master muffler but not sure what series to get it's gotta sound realy good i'm having my 5.7 rebuilt it's goin 30 over with 5 spd 89 chevy swb step side,pics and sound clips would be great

40 series are one of the best ones out there i got a single in dual dump on my 96 4.3 and at idle it sounds like a v8 with a deep tone but my show truck i have dual 40 series

I had the 40 Series Deltaflows on my 82. I loved them! I still love hearing my truck pull into the yard. Especially considering that means money since the guy who has it is making payments to me. :-)

I have true duals with Catco cats. 2.5 S.S. pipes with 18 in long tips that are 3 O.D.

Gibson shorty headers, into a standard Y-pipe, through a high flow Cat, into a 40 series FlowMaster with 3" intake and dual 3" outlets, with 4" stainless tips. All welded and sealed, with new custom made hangers, all with stainless hardware.