I installed the HEI 4 pin module inside a gutted mopar ECU box. Looks stock and the car fires up much easier than it ever did with the mopar box. I just bought a cheap HEI module from oreillys and it does fine.
Is not the first time somebody makes that and that's what Don at FBO ( 4secondsflat ) made on its first aluminium box, HR688 to replace the A688 unit maybe 8 years ago, and after that he made the new HRR688 which is the one actually being sold with a complete new system. When I knew that about his HR688 box I got deeply dissapointed. I miss the original A688 box thought.
