Magnum Vs LA 360

I don't have anything that needs an engine right now but I have 2 360 magnum short blocks in the garage, one is a fresh rebuild that got spoiled by sticky valves on a set of "ready to run" (that weren't) out of the box eq heads where I had valves stick and kiss pistons.... 1st time I ever bought a set of brand new heads// and it bit me in the azz by doing so.
Add that the break in oil came out a silvery slurry mess that I've never had before on a first oil change (2-3 hours of total run time on that one)
This engine was freshly bored 30 over at the time. Total of 6 miles on it when it had to come back out...
I ended up putting a used, sourced from CL, engine in that one. And sent those brand new eq heads to the machine shop for another couple of hundred $$$$ worth of machine work to make them really " ready to run"....

Anyway my son had built a 76 360 that wasn't enough for him so he redid it as a 408 shortly later. (Like 5000 miles)
Since I need at least rings and bearings for the one with the defective heads anyway, I was wanting to buy the rings for the pistons that came out of his LA (same 30 over as my doomed rebuild) and use those.
These are speed pro hyper and coated flat tops with 4 valve reliefs (HP405 or something like that)
I've never been interested in a 7k rpm screamer, anyway. Most of my stuff never sees 4k....
I'm gonna need another set of heads to be able to use this short block when it does get used anyway. They WON'T be EQs. That set that I had trouble with, I picked up directly out of EQ's warehouse, off of the back of their dock in Chicago.

Anyway after all that, would I be able to use pistons meant for an LA in a magnum block? I know the bore diameter is and the stroke, identical between the 2