Look at post #26 http://www.mightyram50.net/vbulletin...811-bench-seat There are also pics of an experiment with bondo that don't look great. If you were closer I'd give you that dash pad.
I ended up using shoe goo to coat it. You want to use good contact cement if you choose to use the foam pipe covering. You will also need a good knife and sharpening stone as a couple cuts makes it dull. Or as Geezer suggested the expanding spray foam. If you do that in place use an acid brush and coat the steel under it and anything else to include your skin that you do not want the spray foam to stick to with petroleum jelly.
Edit. There are four nuts #8 metric I think for the metal part of the dash that you have to remove most of the dashboard stuff including glove box to get at. It also need to be loose to get the soft pad out. The manual should show you where most of the connectors are. there is also one nut behind the soft dash pad left of the ashtray behind that flat indent spot. The rest will be Phillips head screws. You will need a 2 inch Phillips for the glove box. Oh yea you will need t take the steering wheel off and lower the steering column if you have adjustable. I have adjustable. if not you might need to disconnect your steering column.