Thinking of getting torque converter. I read the sticky on them and guessing it would be best for my drift trike. I seen some on ebay but nit sure which one I need. 3/4" clutc, 5/8" driven..... 3/4" clutch, 3/4" drive????? TAV 2,3??? I know my shaft on engine is 3/4". I have new 40/41 chain...