Hi cinqster - lol, noticed your sig picture, but never checked your profile! Have done now!!
Remember it being a nice kit - didn't realise the company was dormant. GP were our rivals back in the day when we were making beach buggies and other Veedub stuff - still they lasted longer than us! Pretty sure the guys who bought Dad's company are dormant now too!
If you were going that route - I'd use the block stuff, not the expanding foam in a can - or by the sounds of other posts there is now newer stuff of there that has surpassed urathane.
Glad you're making progress and can't wait for the next pics!
Cheers
Darren