If I upgraded the trans and got a lift pump what could I squeeze out of the beast as far as 1/8th and 1/4 mile times with the stock charger and internals.

For an lbz there are some running mid-high 12's with trans, programmer, and lift pump. I think Mcrat's wife truck is around 12.8 with what you are wanting to add.

Depends on the one tuning it. Many in the low 13's a few in the high 12's for the LBZ.

this should probably go in another thread but what benefits does a co-pilot give? If you have efi, can't you tune how/when the tranny shifts? What is the purpose of a 1500 co-pilot. Is its only feature to lock up the converter on command and raise line pressure?