I'm looking to do a static 3/4 drop on my 90 2wd base 4spd truck and wanting to know the best offset for a 17"x8" or 17"x8.5" wheels
I would say a 3/4" drop would fit anything that would fit a stock height. Get around 2" of drop or more and it becomes an issue.
^He’s asking about offset, probably to avoid rubbing the fenders, or simply because 8-8.5” is a lot wider than stock. Mine are close to 0 and would rub if I did a 3/4 (did 2” rear and matched the front, probably 1.5), so you’ll need a more positive number for sure. What the number is I can’t say, I have 17x8 on my truck rn for winter storage but I don’t know the specs, I can check in the spring if you still need the info.