Cheap Upgrade

[must89]

Hey guys and gals,
Alright first off I'm gonna admit that I drive a 'sigh' 4 cylinder mustang. I probably should post in the small ford section but nobody seems to post all that much in there. What I'm inquiring about is some better flow for my little car. So far I've just pulled my intake silencer and gutted my intake muffler. I'm looking into some exhaust but I really want to replace the wimpy 140ci with a 347 stroker so I'm trying to limit spending. I've heard that Ford Rangers came stock with headers and that these headers make a little bit of an improvement for the 4 cyl in my car. Does anybody have any information on modifications that are needed to make this work. Honestly I would accept a simple "Yes it will" or "No it won't" but ideas are much appreciated as well.

If anyone is interested in my seeing my car check out
http://www.cardomain.com/id/must89

Thanks for your input, feel free to criticize