I am not at all familiar with small block mopars, but...
I have done it myself, had it done, and have a set that someone else did. The "someone else" are 2295 trw's that had the dome machined off, but I think done poorly, the compression height varies more than I would like.
The set I did at work, on a lathe with a fixture I made, were 400 pistons used in a stroker 440 (before there were stroker kits everywhere). They would have been slightly out of the hole, and the compression too high, so I took off .070. I wish I had done it in a mill the way Dwayne suggested to Kern.
Third set was a dished forged set for a short rod 400 chevy. I had the outer ring of the dish removed, they became a really light zero deck flattop for a long rod 406. Other than the custom work on the pistons, a bright chimpanzee could have put it together. (Those forged dished trw's were $100, plus $50 for the piston custom work. I think the lightweight tool steel pins cost more than the pistons did.) It ran very well, but nitrous was never contemplated, material above top ring land was way too thin for a power adder.
Edit: the Mopar 400 forged flattop trw's had an unbelievably thick piston head for balance, I think I remember well over .400 thick. Really heavy, and heavy pins too!