Adding a comment so folks know what that bell housing can do. And I believe that I have this correct.
All other stock slant six bell housings will only accept a 122 tooth flywheel. That severely limits the available clutch and pressure plate packages.
The slant six NP 435 flywheel housing will accept a 130 tooth flywheel. The 130 tooth flywheel is used on the small block Mopar so there is a huge assortment of performance clutches available. But nothing is really free because the NP 435 transmission is truly a truck transmission and is not performance oriented. But if there was a way to get an a833 mounted to that bell housing, that could be a sweet package.
