I was looking into the same options..Have doing some quick math it was to the point that i was going to buy a new lentech AOD.. after the converter, valvebody, shifter, servo.. and all the good stuff... i was looking at over 2000 for it.. so im going with a t5 swap for now.. got like 2 t5s on the side.. and i will be saving up for a tko.. but if i stay with the auto.. look into a edge stall.. if its a street car u would want a lock up but u can talk to andre tho.. i think thats his name.. but for a shift kit baumann.. or a lentech valvebody also forgot u should really really look into some rear gears