[Walt Fricke]

Now that we know it is a 3.0 motor, the motor mount from a cab (none sold before the SCs) makes sense. I'd replace it when you install this into your car.

The 3 missing small bolts in the flywheel center are for holding the pilot bearing in. You don't have a pilot bearing, obviously.

You cannot bolt your 901 transmission easily to this flywheel. The flywheels for that transmission were all 6 bolt, so you can't just retrofit. But someone no doubt makes something you can use to connect a 901 to the 9 bolt flywheel. Patrick Motorsports? Do a search of the Pelican 911 forum.

Do you still have the Nadella funky universal sort of joints on the drive shafts? You want to upgrade from those if so. One of the problems with going to a 915 is getting CVs and axles which all fit on both ends. Common issue - search for answers on Pelican 911.

All 911s can use the same starter. Myself, I favor using an aftermarket geared starter. But they all will fit.

What do you mean by not being able to turn the engine over? If you use a long breaker bar with a socket on the engine pulley (remove the motor mount so you can get at it easily), it wont budge? That could be trouble.