engine and drivetrain hello all

[wdt1971]

I am thinking of buying a 1972 2002 it looks in ok shape, runs and needs mostly cosmetic work. it comes with a 2nd complete engine two trannys wiring harness, two much to list., I have admired them for a long time and now I am going to jump in. I want two know if parts a a big issue with these cars or are there parts readily available to purchase, like the car I am looking at has a moon roof with a striped gear and no headliner in it? are those parts available to purchase somewhere and how about all the seals for windows and doors does anyone make new ones. thanks in advance guys. and sorry if these questions sound dumb.......Dmitry