What would be the best rear end ?'s

[low&slow]

I hear that the 9 inch ford rear end is very strong and dependable for drag racing, but I'm also curious about the 8 inch ford rear end. Which out of the following will best work? I'm not looking to anything fancy or expensive to put in my truck yet.

1984 Camaro rear end? Limited slip posi track
9 inch ford rear end?
8 inch ford rear end?
OR
The stock 12 bolt rear end I have in the truck now?

I'm running about 480 hp and 580 FPT and a turbo 400 automatic transmission.