Neutral balance to a 360 crank?

I know for certain, that the 318 Mag and LA 318 use exactly the same crank/same casting number and all. No doubt about that one.
cant speak for the 360 but I know the balance amt is different between 360 LA and Mag versions. From what I understand the Mag pistons are lighter than LA ones. I have seen in catalogs where they tell you that you can use either piston in either 318 block as long as you use the rings that go with (wide or narrow)
I have a 360 Mag on the stand, that was bored 30-thou and has only a couple hours on it, damn injectors (2 of them) stuck wide open, and washed down the bores, break in oil came out as silver glitter. that was a 1st for me. I also have a set of 30-thou hypereuctectic and coated LA 360 pistons that I'd like to run in that Magnum block
I have another good, STD 360 Mag crank, and another 360 STD crank, this one an LA
Id like to run the LA pistons in the Mag block.
The LA was fresh then, with 6K miles at most my son decided that wasn't "enough" so he broke it back open and turned it into a 408.
problem is LA 360 takes a certain external balance/ Mag 360 takes different ext balance while a 318 is "scot free," internal balance.
trying to "use up" some of what I have laying around. and I want the flat tops in teh Mag, (I dont have an LA 360 block) for a perf increase.
To me (in general) the 360's thorn in its side as to why it has typically been nothing but a gas sucking pig is the low compression. I want to put the flat tops in, but build the long block (otherwise) as a Magnum motor, not as an LA..... Make sense?
I have a D150 with a /6 that will stay a /6. but I may be getting my 83 D250 back, and it is plum wore out. except maybe for the LA manifold bolt pattern EQs that I put onto that truck's original 318 back when I had it... which is still in the truck. now well over 200k, bottom end never touched from new.
I want to build a torque monster so tahts why I want to up the compression as a start. it will stay carbureted.