72 Blazer--rear hatch latch dimensions

[HuntUSMC]

Does any one have a 72 blazer rear hatch latch accessible that they could measure?

I've been searching for a rear hatch latch for sometime (I don't frequent the club enough to get in line first when one does become available). I have access to a machine shop and CNC machine and I'm going to take a crack at fabricating one. (I've already purchased a T-handle, round sleeve with square center, and necessary springs.)
Also my rear hatch needs some fiberglass work so I should be able to make small adjustments as necessary...in both the metal latch or fiberglass. Ideally I'd like to get some preliminary measurements pictures to accompany the image below.

Thanks in advance! Happy New Year!