yes definitely use a toyota gasket... some people use thinner head gaskets to get a bit more compression but i never have and why mess with reliability for 1-3 HP? <img src="/forums/images/graemlins/rolleyes.gif" alt="" />

if you have a haynes manual i believe there are a few spots it reccomends to have silicone on. i believe these are the water passages. i cant remember where or how much though.

otherwise no slicone on the headgasket.