I had drilled the seatbelt brackets back when I was assembling the F-705 bulkhead, but thought they might interfere with riveting the seat and baggage ribs. Now that I've final installed the F-715 outboard seat ribs, and the forward side skins are not yet in the way, I thought it would be a perfect time to get these installed.
I don't yet have seatbelts or fittings, so I used a latch plate angle for the tip up canopy to provide the 3/16" spacing for final installation (photo 1).
I'm short one bracket for some reason, so I'll finish this up when I find it.
Setup for getting the seatbelt brackets properly positioned for final bolting.