'29 A Engine Out, Now What?

[MartyAndrew]

Hi all. I'm new here. I have a '29 Coupe which my dad bought in the 1990s. It was stored in a barn since the 60s and already had a lot of bondo. I bought it from him when he got sick, took it apart (it ran/drove) in 1998, had all panels blasted/primed, bought new body parts and started reassembling it. Had 2nd kid in 2000 and all Model A work stopped. NOW 1st kid is 16, gung ho, and we are trying to finish the job!
We got enough body structure together to take it back off the chassis, and have been cleaning sludge off the chassis, bumper-to-bumper for the last 2 weeks. Nearly done, we took the motor out last night to clean that area and start blasting, priming, painting and putting parts back ON the chassis.
My Question Is: With the engine out, is there anything I should do with it or check on it that I will really wish I had done if I just put the engine back in and do nothing but clean it? It ran 12 years ago, but the last time it ran some sort of shear pin on the crank pully sheared. I never replaced it and haven't started it since. Does this indicate any major problems?
I've worked on cars most of my life as a hobby but other than a few books and looking at this car for a decade or so, I'm new to Model As.
Any advice would be appreciated.
Also, I've joined MARC and will attend a local meeting soon.

Marty