Awesome. Car looks great and I'm glad I could participate in this secret project!
My kid had me chained to his car (not a Subaru, but a Hyundai Tiburon) in an effort to keep me working on it, but he underestimated my lock picking skills. When he left for school, I picked the lock, shed the chains, and snuck out of the garage and into the shop where the lathe is to cut some lug nuts.
As for the kid's car, I'm trying to have him do whatever he's capable of. I did all the delicate valve work, but he's doing a lot of the work. And for an update on progress... I've got all the valves back in the head, the head back on the car, and we started it first time yesterday. Runs great!! Couple small issues to deal with, but it's alive!!!
This pic is close to the beginning of the job before we pulled the head. Here he is doing a little wrench turning while my Z sits neglected in the background: