Thanks Jeff,
I've got a spare dash in storage with massive cracks that I got to experiment with more than anything else. The frame is somewhat rusty also, thinking of a dip in molasses to treat it. Then maybe hit it with silver paint?
On my 71 it has the original dash still (cracked in a couple of places, but it's not bad..) and I would like to see if there is a way to provide a seamless repair to retain the original dash texture and look/feel. Re-skinning is great and looks superb, but it does add a few mm of thickness to the gauge housing areas and that can make getting gauges back in a little tougher than OEM.
I personally haven't had an issue with my own re-skinned dash in my 72, but others have had to warm up the hair dryers and crack out the vaseline to get the gauges back in. "Honey just grabbing your hair dryer, and do we have any vaseline?" haha.
Given your build is all about DIY (not outsourcing) this method makes perfect sense, I'm glad you didn't try and re-trim the dash, no offence but it would have turned out awful.. I've seen similar jobs in the past.