The new owner FAQ covers engine oil but not gear oil.
80w-90 GL-4 rated gear oil is what the old manual calls for in the rear differential.
I typically used Valvoline synthetic 75w-90.
'Conventional' engine oil, you need an oil suitable for wet clutches, do not use the current high-mileage oils for modern cars. By high mileage, I don't mean the oils for cars with 100K miles on them. The Shell Rotella oil is what many people use, so-called diesel oil. I use Motul motorcycle oil.
Look into RICOR or Race Tech front fork cartridge emulators. Once dialed in properly, there is a big difference between the OEM fork operation and the replacements. '85-'92 are 40 mm while '93-'07 are 43 mm.
Ken Z I was wondering how many miles you have used rotella 4. I am thinking about using it after break in is done. I have seen other well known members use it with no known side effects. I am interested to hear what you or any other guys have to say on this. Thanks.