if you are like me and have chunks of foam missing in the corners. MAke it tough as nails so it won't happen again! I use 5min epoxy and cotton balls. Soak the "balls" in epoxy to make a "dough" stuff and mold into place. Get the general shape of the dash, then get the Canadian tire kit to finish it off with texture. My old 84 had that done on it. When i took the car to the dump.
The dash was then only thing that looked min!
Cheers!
Eric