Lot's of people have added 460 and 1000 systems to their cars. Personally, I'd build a system, but for the prices you can pick up used Mach systems for I can see how some would believe it's worth it.
That said, I don't see any reason it wouldn't work. My sister's '01 has the Mach 460 system, and the changer will sometimes hold onto a cd for a day or so; that's the only problem I've heard.
My '95's Mach system still sounds amazing for being 12 years old.
I just hate that my cd player usually won't eject if I leave a cd in overnight.