I've had mine on for over a year in the Memphis heat, and it still fits so well I don't even need the adhesive. You can't tell it's not factory until you touch it. Sure, sun might damage it eventually, (it hasn't damaged mine) but you'd have to buy and destroy three of them before you approach the cost of a perfect new or reconditioned dash pad.
I have had mine for about 5yrs, and it fits and looks great. Can't tell it is a cover, unless you look real close.
I have had Three of them and they all fit and looked Very Nice! The one on my Green car has been on it for about 5 years...looks great.
I've had one in my 71 F100 for about 9 years now. Still looks great. Of course I would rather have an original but they were around $500 at the time. Mine came loose once but I re-glued it and it has been fine every since. Mine looks original unless you look at the front down low very close but that is in an F100. I'll use on in my Maverick when I get that far. clint