Magnum vs LA compatibility

Hey FABO techs, I was wondering on the part compatibility on magnum engines vs LA engines. I recently had a 340 block crack on me and now have a bunch of top end parts made specifically for an LA block. I’m contemplating if I should build a 340 based 416 Stroker or a 360 based 408 Stroker. 360s are more abundant and I’ve heard that the magnum blocks can handle more power as well. Since I have a bunch of top end parts made specifically for my LA block, Here is the list of parts:

-trickflow 190 heads with hydraulic roller springs (supports lift up to .680)
-edelbrock air gap intake for LA block
-morrel hydraulic roller lifters
-Harland sharp 1.6 roller rockers made to support LA block oil thru pushrods

I know I have change the intake since the bolt pattern for the magnum block is different, lifters since magnum blocks came standard with roller lifters.

My question is: should I return my roller rockers since Magnum blocks have a different oiling system? And is there anything else I need to replace? Thanks!