There should not be much in the way of the oil system other than the pump that you should have to replaced. But a rebuild is probably not a bad idea. As far as oil I have heard good things about amsoil although they are alittle expensive.
http://www.amsoil.com/mygarage/Produ...TOYOTA+SUPRA+0
I have not used there oil yet but the gear oil works very well in my 6spd in my celica.