I really don't know if the 2wd wheels are different or not. If the bolt pattern is the same, they should fit fine.
Almost any 6-hole wheel will fit. You will want to be aware of the offset (backspacing) on other wheels. This can put the tire too far in or out of the wheelwell. The only other issue I am aware of is that some older Chevrolet wheels is the hole for the ub may be too small to fit the Toyota hub (depencing if you have manual or full time hubs I am told. Mine is full time and the hubs are larger than a 70's-80's Chevy manual hub...I have a Chevy wheel that will not fit because of this.
I don't know about the 02's, but for 1st and 2nd gen trucks (79-95) 2WD and 4WD rims are not interchangeable, 2wd is 5 on 5.5 and 4WD is 6 on 5.5, so go count the lugs.