An oil cooler will help a good bit with a setup like that one. It shouldn't be too hard to rig up the oil coolers from the 90's and 91's to work on your 92. Just re-route your oil pump return line to your oil cooler and then have the oil cooler return line go back to the return line on your oil pump. There's no reason it shouldn't work. The only other problems I could think of that you may run into would be needing a little more oil in your system and you may run into a problem with low oil pressure. Just check to see if the oil pumps from the 90's and 91's are the same as in your 92. If so, then you should have no problem with oil pressure. You could also check and see if the oil capacity is the same as the 90's and 91's as in your 92. If so, then your home free and that should be all you need to do.
