Bob –
Welcome aboard! There are quite a few TE/AE folks near the "DC Area", the United was there in 2008. That part of MD has an especially knowledgable group including some club officers & board members, etc. Maybe some of them will chime in. Are you a club member? The roster lists everyone by state.
Our "Forest Green" Mk1a is #688, not too far from your car’s s/n either.
I "assume" that since you can "turn a wrench" – you’ll be careful with something that has been sitting for 25 years 😀
Good luck, and hope to meet you soon.