The Great White Bat

iTrader: (4)

so here i am with 99 Z28, auto, and im trying to decide what to do to it. What i would like to do is throw a convetor in the tranny. well with 2:73s i dont know what size of stall to get. i dont want to get rid of these gears because there fun. after that im gonna do a cam. the cam im intereseted in is the Old man cam from thunder racing. so, the real question here is how am i going to do this? what convertor do i need to match the cam? any help will be appreciated. thanks