Help Spec'ing a Rearend

[JMarsa]

What's more better? I want a to build a reasonably priced rearend that's bullet-proof for my circumstances. I have neither an all out car nor budget.

I'm comparing mainly two alternatives for my ~420 RWHP LS6 powered, T-56 shifted 3200 lb Nova, AutoX, HPDE, street car with 295 series DR/sticky tires. The car might see 6-10 1/4 mi passes when it's done just to get times. I'm not into drag racing. Both will use a C5/6 rear brake set-up.

1. 8.5" 10 bolt from a Caprice
This will require new 3.90 gears, a diff and axles since the caprice is 5x5. I'm thinking a Truetrac for this set-up.

2. 9" from a truck
Do I need Torino big bearings? This will also require 3.90 gears, new axles (5x4.75) and a diff - I'm thinking Platinum Trac or Black Gold.

3. 8.8" any $$ savings over a 9" when everything has to be spec'd ??

I'd like to keep the whole package (minus brakes) around $1500.

BTW, I'm running a wide rearend due to Vette zero offset wheels.

--JMarsa