Diesel vs. gas valve body

Hey all. I've got a '92 diesel 518 (618? Dunno.) non-lockup transmission, and we're kicking around the idea of putting an Ultra Bell on it, to use behind a big block in my friends car. What I do not have are any spare gas RH valve bodies, especially one that's a non-LU type. I suppose when I take this VB apart to clean & inspect it, I could pull one from another trans to compare internals, but I honestly don't want to tear into an already finished transmission...and there could be casting differences, etc, that I won't notice. I'm aware that Transgo sells a special kit for the diesels, but I haven't called them yet to see what the reasoning is for that. Has anybody ever tried a diesel VB in a gas motor application? Or been into one enough to know how different they are?

the governor housing and weights are larger > od. than a gas

you would need heaver/ stiffer springs in the shift valves.
I went the other way... swapped gas v body into a diesel trans to increase shift points.(swapping to a "P" pump)

on my 72 Dart I used a JW bell on a gas 518

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