possible 360 build

I have a 2000 360 block here (Magnum engine) It had been completely rebuilt including hot tank, 30-thou overbore, new cam bearings and freeze plugs, polished crank, all new bearings, new oil pump, new roller lifters, and more. No line boring or anything like that though. this engine wound up a stack up of errors. It was a Craigslist "used engine" buy, that was rebuilt to replace the original 258K mile Magnum 360 that came out of my Durango. I had never heard it run upon buying, took it apart immediately for rebuild upon buying it.
Upon break in, I had an injector (or 2) stick wide open, brand new cat went red and plugged, break in oil came out as a slurry of bearing material. the excess fuel "washed out" the engine and diluted the oil. also #4 exhaust valve stuck, on BRAND NEW set of EQ heads, installed out right out of the box. I made the mistake of "assuming" they would be fine, as I received them.

Machinist said that #4 exhaust, wasn't the only tight valve in those heads, when I took them in to "see what happened" before putting them onto the engine that is now in that rig. Poor assembly by EQ. he had to pound out most of the intakes too. and also that this was not the 1st time that he has seen this on new, out of the box Small block Mopar EQ heads, either.
less than 6 road miles on this engine since rebuild, and roughly 3 hours (max) run time on it, and it got yanked. been waiting for engine stand-space to get it up on stand and apart. I figure at a minimum, all new bearings again throughout, maybe another round of hot tank and bottle brush, a hone, and another set of rings.
this was far from my "1st rodeo" in engine rebuilding, but all the problems I have ever experienced upon a rebuild showed up on THIS build for some reason.
My son has an LA 360 (76 I believe) that was also rebuilt not too long ago. also 30-over, but Federal Mogul flat top pistons with valve reliefs, would be a bump on CR over stock-replacement Magnum pistons. about 6k miles on those parts out of my son's engine. He has the LA crank, rods, and the described pistons. he decided 360 cu in wasn't "good enough" and decided to turn his 360 into a 408. 1 summer's worth of driving in a Ramcharger, mostly highway.
My question is, can I use the LA crank, rods and pistons, in a magnum block? I had thought that, if it would all bolt in, to take those LA parts and see what it would cost me to have them internal balanced, such as a 318 is....
but maybe possibly just install the LA parts as they are and just use a LA 360 converter and harmonic balancer... would definitely re ring those pistons, before install.

If this is possible to bolt in the LA rotating assembly into the Magnum block there is still the issue of finding a set of good, uncracked heads to top it off... story for another time.