I have a stock 440 I'm putting in my car (70 challenger). The engine came out of a motor home (1977 or 78). I have replaced the intake, Holley Street dominator, aluminum water pump housing, will be using headers also, trying to keep weoight down a bit). What is the best carb for this? I have heard different stories. Also money is getting to be an issue (spent alot more than originally planned, I know). I am going to drive it, not alot but not going to sit in the garage. What is my best option? I was thinking of a double pumper with mechanical secondaries. Thanks, Danny