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Old 10-30-2009, 01:03 PM
erm
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OK...in answer to your questions:

Don't go too large in pipe size as you'll lose some low end torque. 2.5 - 2.75" seems to work best with most small block engine. The tip size doesn't matter.

Headers are a good thing to do. I like JBA headers a lot!

If you have a HEMI, Flowmaster makes two catback systems, no 17423 & 17424, that will fit your truck. They run from just under $500 to $570 retail per their site pricing. A local shop can probably get it cheaper for you.
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