[swissarmychainsaw]

I'm assuming you are looking for improved gas mileage?

I have considered a lot, different options and fell into something that might help. (and gas here is close to $4 than $2.)

I've looked for Gear Vendors on craigslist for years, and they always seem to be the price of half a transmission (or more) and they are used.

I thought about putting in a 'newer' tranny with more gears and stuff.

Then I ended up gettting a Suburban with a carbed LS in it, and that thing gets in the mid teens for gas mileage. Stock TH350/NP203 (part time), has tons of power and sounds great.

If your going to spend several grand on this, and you will, consider just getting a used 'crate' - ready to roll - LS.