I've got a pair of 850s. A 95 850 with numerous mods and a 96 850 wagon, bone stock
The 95 has 229k miles, mildly ported head, GLT cams, ARD blue tune, 19t turbo, 3" ipd exhaust, R manifold, new pcv/catch can setup, shimmed acumulator transmission, walbro, blue top injectors and walbro pump. Rockford Fosgate stereo (in doors, dash etc, 2 12" sony subs, 800w amp)
The problem with the 95 is that the body is very much starting to show age and a spark plug fell apart inside the engine, destroying the head and the no 3 piston. I can opt to rebuild the engine, or swap everything into the 96. My state does OBD testing on 96+ vehicles, making it slightly easier to pass emissions and the body is so much tighter/cleaner on the 96.
Just swapping the mods is a ton of work.
The 96 has 105k miles and is very much stock.