The Tilton 60-6105 arrived today. I got a chance to test fit it.
I’d calculated about 0.44” of play between the TOB and clutch fingers. I haven’t tried to measure it, but it looks pretty close to my estimate. So I think this would be a viable setup for a JZ-AR5. I may have time to get it all proper gapped this weekend.
I made a barebones order from Toyota, like cam seals, dipstick oring, intake/exhaust gaskets, mainly just minimum to put the engine together and see if it will run.