need a 4 in / 2.5 out something used but good in the 62-65mm maybe a 70. 3 bolt for a local guy with a 3.8 in a 67 chevy truck. He was about to sell it and the old 66 turbonetics unit he had let go. pm me me ehat you got and price I will forward your phone # to him. he would be mailing a money order I guess.