If the 9" is already the right width to fit the car, use it. It sounds like a 3.55 gear would work pretty good for what you want to do with it. I agree, the 2.75 is way too tall for "umph".
If you want to check another option, the Ford 8" rears from Mavericks, 60's Mustangs, Mustang II's, Granadas, etc. are about the same width as the S-10, and you can get most any ratio that is available for 9". Just find one that has 5 lug axles, not 4 lug.
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David
newbie #4153
