I have a d100 v6 hydro bell that had the 833OD 4 speed ( it was also used in DAKS with a a535 5 speed (bolt in replacement for 883OD units)

it also has the 435 granny tranny bolt pattern

if the one you saw in the JY is duel bolt pattern you need to score it as it is a hens tooth. should be able to sell/trade it for what you want.

would not be that hard to make up a hydro MC and use the stock slave cyl for a hydro clutch in a car.

I bought a flywheel for a 78 318 at auto zone cheap, also flywheel for a 94 ram 1500 cheap,

order a 318 fly for a 85 d150 that's a 143 tooth for a 10.5 or 11.5 disc