Re: exhaust help
the american thunder is basically the 2 chambers I believe. I agree the flowmasters sound good on the 5.0s but im getting tired of mine and everybody else's car having them. Im about to unbolt mine and find some mufflers to lol.
'04 Roush F150 ( totalled while parked
'89 Gt Hatchback H/C/I, 1.6 rockers, 75mm maf, 24lb, 70mm tb, cai, udp, full exhaust, msd ignition, 373s, Eibach Springs, Lakewood 50/50 rears, Adj Rear Control arms, A/C Delete, Smog Delete, EGR Delete,