running 20s?

will i be able to run a 20x8.5 with a 45 mm offset without rubbing the frame in the back and be able to tuck in the front. im in the process of bagging the truck now, and i got a deal on a set of wheels that is hard to pass up. oh and its a 87 2wd with the jap style bed

The 8.5 in the front would be kinda fun even with 4wd sheet metal

i have 8.5 on my truck an it has a 35mm offset an i dont have a problem with in the rear or the front

I stand corrected, Its all in the offset though, and it could be different with the pre 89 sheet metal