i'm using the amsoil series 1500 (i think) 20w-50 full on synthetic race oil. this is seriously the best oil ever. i've tried most other synthetic oils, and this has out performed them all.
in the tranny i'm using redline 75-140, its pretty thick, making shifting somewhat tough, but it protects like no other. same stuff is in my diff.
for my radiator, i use a 70/30 water to antifreeze ratio, because water is better at cooling the engine. i also put in redline's water wetter. you'll notice it makes a huge difference!