I am building a 8 3/4" GM rear end at the moment. I did not purchase the gears yet but was looking at some 456's.

I currently have a TH350 and a 3000 stall but may need to upgrade later.

Also, rhamm1320, thanks for the computer dyno results! There are however a couple minor differences. I have a Holly 850 cfm carb and 1.87" headers. This may not make much difference. I was also looking at the track 1 heads with 208/160 valves. Although, it looks like the dart heads would do the trick and maybe save me a few bucks. Either way, it appears that I am well within budget.

Thx,
Scott