I havent been to the dyno yet so I am curious what kind of numbers you guys think I should be pulling on this setup;

Turbo B18A obd0 stock bottom end
Mild head porting
Crower cams
T3/4 Turbo (not sure the exact specs) @ 10lbs boost
450cc injectors

Also, where is the limit on the stock bottom end?

 

the stock bottom end will probably take more then those injectors will put out... Ive seen personally a couple 300whp bone stock B18b's with a mild setup... but they used bigger injectors then that..
I wouldnt risk it

 

~240-260 wheel on pump is my guess. all depends on the tuning and how far you push it.

 

Put it on a dyno and find out. Bench racing is not allowed in this forum.