Over the years there have been multiple conversion kits. Some for Big Block Chevies (not even close to mopar parts in that kit.)

I remember a 383 done in a car mag back in the late 70's early 80's. They added a tube along the side of the block for the oil drain back and did a few other changes to accommodate the valve train.

As long as you don't break a part then you were OK but if a unique part breaks and the company is gone your in trouble.

IF you can find an aluminum head (aluminum fixes pretty easily) that uses stock valve train it would be OK. For me it will be the day after the company goes out of business that a no longer available rocker arm would break.