2nd S-10 front wheel offset question

What offset is everybody running on a 20x8.5" wheel? Its going to get bagged and bodied so I need to know what will tuck. The guy that owns the truck wants to buy the wheels before the work is done so I won't be able to measure from the truck.

+ 15 to +21 and youll be ok im running + 18s and its all good !!

i think mine are +12 and they tuck even with the 5/16 spacer to clear the center cap.

My '96 is bd'd with a 20x8.5 on 255/35/20 tires with a +15 offset with no problems.

Anybody else have an infor to offer? Its seems that it can range from +12 to +21.

Thanks for the responses!