This past spring I rebuilt my 2 barrel Rochester carb on my 75 165hp inline 6. Everything seemed good so I rebuilt it. The last time I went to the lake I started having running isues. I removed the carb and that is the first issue I had. The metal line going from the exhaust manifold to the choke on the carb is broken in two about an inch from the manifold. I tore the carb apart and the aluminum has began to flake off and plug the jets. I have now installed a reman Sierra rochester 2 barrel and it was hte exact replacement. Same numbers and everything. Here is my main question: Is there any way to change the carb to electric choke? My guess is the metal tub heats up and the heat follows it inside the cab and is what turns the choke off. Metal tube is totally screwed and I really do not want to replace the manifold. Anybody have any ideas?