If you check most of the FBody boards, the most often recommended one is the Pro 5.0 with the Lou's Short Stick. That's what I bought and I love it. Haven't missed a shift with it yet and it dropped my ET by about .2. I'd recommend ordering it through
http://www.afterthoughtsauto.com. If you buy it from other places you have to order the shifter and the Lou's short stick separately so you end up with two shifter handles. Afterthoughts lets you order it as a combo so you only get the Lou's short stick handle and not the Pro 5.0 handle. They are also great to do business with.