Anyone tried one of the Summit Cat-Back dual kits with a 4.9L? I'm considering ordering one, but want to know what they sound like first. I don't want anything annoyingly loud, but rather something more like the Flowmaster single kit w/70-Series muffler. In other words nice and quite, but with a deep mellow tone when you get on it. I'd just get the Flowmaster kit, but I'd prefer a dual outlet setup and it's twice the price of the Summit kit.

 

If you want flowmaster but won't pay for the kit then just get the muffler and have a shop do the rest.

 

Makes no difference if its flowmaster or not to me. I previously had a flowmaster kit on the truck and liked the mellow sound of the 70 Series muffler, and just want to make sure the Summit kit doesn't have some ungodly loud muffler with it. The 70 Series muffler alone is $110, and I guarantee you no shop will do the pipes for a dual kit for $60.

 

Hmm it seems to me that the summit kits come with your choice, I think they normally come with a glasspack but you can get a turbo muffler. Well, I just checked one and it says they come with a turbo muffler. Here is a Kit I found for a 1990 F-150 with a 5.0 (I'm just guessing at what you have but the 5.0 setup should work with a 300 6 anyway)

SUM-684011 Single 3"in and dual 2.25" out. I

 

I bought a pair of Summit turbos for my F-100 (351W) a few weeks ago to replace some glass packs that were on it. I grew tired of the loud popping of them but I was afraid the turbos would make them too quiet. I tried them anyway and absolutely love them and they were cheap! I can still here it but now I hear the radio and wind noise too. The interior noise didn't change a whole lot, a little quieter at idle, alot at speed.

 

Thats actually the exact kit I'm looking at. I'm going to check the local exhaust shop here in town tomorrow to see what they would charge to bend up the tailpipes. All depends on which comes out cheaper.