cork gasket with rtv to hold it in place. do not install the rtv on the entire pan just on a few spots to hold it in place. you should be able to get the gasket at your local auto parts store for under 10 bucks.
thanks i all ready got the gasket just didn't know if i needed it or not cus book said theres 2 options rvt or cork and when i took it off all it had was rvt