360 boost pistons?

Have you considered stroking that 360?
Custom pistons for your current build will be expensive.
Consider stroking to 408 and use these off the shelf ($500) Icon pistons. They are specifically designed for high Boost and nitrous applications. 2618 forging, 8.8CR, with a 65cc head.
Bore the block .030 and have the deck milled to get the correct RA surface finish for use with a MLS head gasket and to set your CH.
These pistons are designed for a Magnum block which has a shorter deck height.
If you don’t deck your block the pistons will be down in the bore, no big deal as this will net a lower CR.
The money you save on custom pistons can be put towards the machine work....Plus a stroked, blown and nitrous engine is just plain awesome... lol
And as being that I’m babbling, use full groove main bearings as they provide full time oiling to the rod bearings. All the extra cylinder pressure is gonna put a load on the connecting rods bearings...

SB Chrysler Icon Forged Pistons Dish 34cc 4.030 Bore IC982-030