Greetings: I'm looking to replace my manual A-855 4-speed transmission with a five-speed for OD capability. My car is a 1970 Challenger. It has a stock 340 and a 3.23 rear. I'd like to go with the Keisler RS400 if possible or something similar. I've been trying to contact Keisler Engineering for the past ten days, but no return call or e-mail response. Someone mentioned that they might be going through a bankruptcy issue / reorganizing, but not too sure. Without modifying my tunnel, could someone let me know my options or let me know who might be selling the RS400 five-speeds? Thank you
