Good luck getting answers. I know I was not able to asking a similar, though more specific, question. There are too many variables to consider in your question, to be honest.
I believe the correct answer is "stock toyota steelies are the only rim you should be using"
Any rim with the correct, or close backspacing, and 15" diameter or larger will physically fit with drum brakes. Nothing on the drum breaks the plane of the wheel mounting surface. As long as the wheel has close to 3.5" backspacing so that it will not interfere with the tie rod ends, will work. Less backspacing would physically fit, but would stick out further and change where the load is placed on the wheel bearings.
Discs are another story. Correct backspacing will still determine whether or not the rim (or tire) could contact the tie rod ends, but it will tell you nothing at all about fitting around the caliper. (Thus the reason for my question on this issue) No commonly supplied rim dimension will tell you whether or not a rim will clear a caliper, which is also determined on if (or by how much) the caliper breaks the plane of the wheel mounting surface.
Something explained very well here...
http://www.fjcruiserforums.com/foru...ack-spacing-offset-explained-illustrated.html
Another consideration are steering arms. Are they stock, or one of the many high-steer kits available? I dont know, but if the dimensions on the various kits differ, then the allowable amount of backspacing would also change. i.e. the tie rod ends could be closer to the wheel mounting surface, or further away
I can tell you that AEWheel series 186/187 15x10 will just fit on a four wheel disc conversion, using late model front calipers.
AEWheel series 58 15x10 will NOT fit unless you were to run wheel spacers. They might work with the earlier calipers, I dont know.
I'm hoping that procomp 51 or 97 will fit, though I'm not currently sure how I will be able to make that determination without actually buying some, and test fitting them
