For superchargers with a manual trans find a Kenne Bell, I saw one on ebay a couple weeks ago for a
fox 5.0, you don't see too many of them. S-trim kits are cheap as hell, but they don't compare to the KB. Then again for the price you can find them for it's hard to beat. 3.55's will really start to shine once you get more power under it, and some stickies