[olddog]

It was driving forward because the idle rpm was too high for the stall speed of the torque converter, period.

idle was most likely set because the cam shaft chosen requires it.

They did not match the engine requirements to the torque converter or visa versa depending on which way you look at it.

EFI bad, carb good, comment is total BS. EFI will help get the idle rpm down on a big cam, not hurt it.

Unless you have a physical handicap it's silly to put an automatic in a Cobra, unless you have a mental handicap.

You really need to back up several steps here and explain what you want to do with your Cobra.

Also there are better options for less money on your engine choice. Big names usually don't give the best customer service to the little guy.