If you have an undrilled bedside I wouldn't spend alot of time researching. Bolt the tire/wheel to the bracket, if finish painted put several layers of tape on the bed to prevent scratches, have a couple buddies hold it to where it looks just right in relation to the pocket in the fender, mark and drill. It will be so close to factory not even judges would know. We relocate or alter brackets when the owner uses modern tire/wheel combos since the old 6.00-16's or 6.50-16's were tall and skinny and a modern tire looks crappy as far as tire to pocket clearance is concerned when mounted on the stock bracket. There is a backing plate and angle bracket for the inside of the bed to prevent cracking around the bolts, be sure to use them.
