Is it an offroad package raider? Also-is your suspension...as old as the vehicle? Also are the leafs in good condition?

You could have a problem with your shocks, and your leafs since the vehicle is so old they could sag, causing that i'd say.

Honestly, mine isn't COMPLETELY stock, but i'm unsure what the stock height is on a raider, I upgraded my shocks as soon as the motor was dropped in cause of the condition the old ones were in, and it provided a 1.25 inches, which gave me plenty of clearance for 35's, with minor rubbing. Really, only SHARP turns cause ANY rubbing, and that has gone away on its own.

I'd suggest getting a body lift, mine is going on in the spring. Then you'll be able to put what you want on it with no problems.