I have a 4.2 with 5 speed, what trans will bolt to this engine? Can I bolt a early C4 C6 etc. Do I have to change computers to go with a late model auto trans. Is there a 5 speed with a granny low that will bolt up? the prob arises when I get my boat sideways on the ramp. Can get back to the top but the cluch is smoking by the time I get there.