John,
My 78 glove box is gone (sold) but as I recall, (because I had to get the lock out to re-key it before it was sold) the lock was held into the door by
a slide clip that barely protrudes from the upper edge of the glove box door. I just hooked the lip on the end of that clip and pulled it until the
opening in it cleared the lock body.
I hope this is a help.
Matt
--
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit