I can't give a higher recommendation to the Maniflow header that I bought
for my 1500 from aptfast.com
Great fit. Absolutely no problem getting it in. No bending or tweaking.
The power difference was amazing. I highly recommend a 4.2.1 feeling the
cost difference is worth the performance. Unless you are roadracing long
tracks, a 4.2.1 will be better for street, autox, and short road courses. I
coupled the header to a homemade 2" exhaust through a high flow muffler.
This with my twin 1.5" SU's and one inch of very very mild porting allows my
spit to very quickly rev well past the rev line. I keep almost doing bad
things racing. Before the car would start to lose rev rate above 5k, but
now keeps going on faster than I can catch it. Strongly in need of a rev
limiter, I am.
jim
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