Edit: I am totally talking out of my ass. Its possible the new gens use the same heads, but probably not likely. Id have to hit the TMs to know for sure.
No your not. The probability of them using major parts in the AMPS gen sets is about par to me going to the moon. Having said that, very small things, have been over the years, reused. But they are nickle and dime stuff.
these sets are being parted out on eBay pretty consistently, enough to where parts are very easy to find.
Wellllllllllllllllllllllllllllllllllllll, not always easy, and not always cheap. Depends on what your looking for, and what some folks think are parts worth selling. Find a rear motor mount, for a MEP-804A in flee bay. Give you 12 months to find it. Good luck.