Distributor for EFI Chrysler 440

It was started by the owner of a twin 440 setup. He was trying to figure out why both of his engines had a thrust collar. And he ordered a new Mallory YLM578 AV distributor. That's a marine distributor, but it has a short shaft, and won't work in a reverse rotation installation with a thrust collar.

Apparently it's true that all the Chrysler marine 440's used the same long shaft distributor. They all sat on top of the thrust collar, but in the standard rotation engine, the collar was superfluous. It just meant Chrysler only needed to supply one distributor, which was interchangeable.

I did find mention of the fact that Chrysler made a few early marine 413's and 426 wedge engines that had a front crank-to-cam gear-to-gear setup that had the cam turning opposite the crankshaft. But they were few, and apparently none of the 440's were gear-to-gear.

So it appears that the only way to use the Edelbrock EFI distributor is to graft a custom-made shaft into it. Someone along the way suggested figuring out how to supply the engine rotation information to the Edelbrock computer from a crank wheel & sensor instead of from the distributor. That seems daunting, and I'd still need a different distributor, since my auto dizzy is too short. And I'll still need the thrust collar, since my engine still turns backwards. So maybe a new dizzy shaft isn't such a bad option…