Just traded in my 98 georgetown a few months ago. It was on the P30 chassis and any Auto parts store that sold truck chassis parts and could look up a P30 could find parts for it.
If you haven't had an issue with the auto park system then you need to read up on it. Mine quit about every 2 years like clockwork. Learned to carry a spare switch to avoid getting stranded. PM me if I can help you out
2014 Georgetown 351DS
3 Boston Terriers, 1 Frenchie
Gonna miss you Toby. RIP