100 is perfect for a stock block gt.

steve where in GA u at?

 

one thing you will want to do something about is your diablo tuner. either return to stock when running nitrous. But honestly the better solution and safest is to get it dyno tuned. Now NA you can switch back to your normally tune.

Run premium fuel, get some spark plugs that are one step colder (ngk tr-6 or autolites 103's)