'Coverlay's' are O.K. They'll never look the same as an original. They're a sorta fix. Not a repair. Out of sight, out of mind! Just as long as you realize that they are what they are. Better than looking at a beat up POS dash!
The ones that I've installed were mostly in British sports cars. More than a few MGB's! TR6's & Spitfires after that. Usually black, but they can be dyed. I have access to an imitation leather (IZIT) that is very thin & made for vehicles, that I've always thought could be used to upholster one of those.
Important to follow the instructions. Test fit the cover as many times as required & do any adjustments or trimming before you break out the glue. The surface being glued to must be oil free & squeaky clean.
The supplied 'goop' to hold it down MUST be placed only in silver dollar sized dabs on the backside of the 'Coverlay'. This is to allow for the expansion & contraction that the dashes are subject to as stated previously.
Get as many of the largest phone books that you can & use them to weight down the coverlay as the goop sets. From one side to the other, 2 deep. Stuffed right down to the base of the windshield. Use lotsa 2" wide green masking tape to hold down places that the phone books are not holding down.