Jamo,
I'd like to have some of what you are smoking!!
Whaler,
I covered my dash in tanned Elk skin that I dyed black. I backed it with 1/4" closed cell foam that body and upholstery guys use under vinyl roofs. I used hot glue to attach the foam to the dash; which was already cut out for the gauges. If you have to seam the foam or round an edge then use wide packing scotch tape.
I applied the leather with hot glue and cut out the holes from the back side of the dash with a razor. I don't believe I had much extra material because the gauges overlapped the dash holes a bit.
Roscoe