Thanks for your story. I would love to hear more about you adding a vacuum trunk release. Our Riviera has one, it is so handy. What did car did you scavenge the parts from for the job?
What I remember is the big car and Cutlass had a different lock arrangement
on the trunk, one had the lock in the body and one in the lid. I grabbed a
vacuum release cylinder from the big car and managed to fit it to the Cutlass.
There was a round plastic vacuum storage chamber with built in check valve,
small enough to fit on the frame brace coming forward. Ran a hose from that
to a vacuum push-button, very small and fit next to that dashboard secure bolt
at the bottom on the left, receded and invisible. From there a hose to the trunk.
Probably a newer electric could be fitted. good luck, Bruce Roe.