Looking back at it, I wasn't clear...
a front axle with a Toyota bell. Could make it a minitruck bell, or a FJ80 bell.
I guess I should have said.. which KNUCKLES are strongest... But in addition to the knuckles alone, the spindles, hubs, bearings, etc... Basiaclly, the OUTERS.
Even though chromo 80 birfs are bigger, I've got to wonder if they're functionally any stronger, or would something else break before the bell of the birf shatters...
Basically I'm at the point where I need to start planning, and either:
1: Take my FJ40 axle as a basis, (using the FJ-60 knuckles, brakes, spindles, etc..)
2: Plan on Marlin's 6-stud knuckles, and also re-use the spindles, brakes, etc. that I have now.
3: Get the parts to complete my FJ-80 outers, and use those.
No matter which way I go, the inner shafts will be custom length, and the housing will be custom.