jeremy nailed it, those are the ones matt is using but they are too big for anything less than 400-450 hp. i think matts 406 is making over 500 so thats why he used them. with some 1-5/8 headers the frame rails might not need clearencing like he had to do on his.
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'51 F100, backhalf with a narrowed 9 and coil overs, 18.5" mickeys, monte front clip, +400" sbc in the works
'05 1500 Crew Cab
RIP
'84 swb 5/7 drop, solid cammed 408 w/ fully ported dart heads, th350 w/ 10 inch hughes, 12 bolt w/ 3.73 richmonds and a locker
'80 swb 4x4 in progress: 7" lift, 350 th350/np205, d44 and 1.5" ORD tie rod, 14BFF w/discs , armored diff covers, 40" MTR's
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