360 questions

The 73 and up A-body K-member uses a completely different design for the motor mounts. Where the 72 older used a flat biscuit with a bolt coming out of each side the 73 up is what is called a spool mount. There are two ears on each side of the k-member with a slot in the top. The motor mount fits down between these and is clamped in by a long bolt that goes from the front to the rear of the car. The rubber isolation a rubber spool (very much like a control arm bushing) the OD is pressed into the bracket that bolts to the engine and the bolt that clamps to the ears on the k-member goes through the ID.

It's a more secure design and will not allow the engine to flop around if the rubber fails like the biscuit mount.

I had a part number for the drivers side mount which was different from the 318 mount but turned out to be the same, some places listed the same number for both the 318 and 360 mounts. Don't know if I got a missed marked box or what but since the spacer thing was so simple I just went that route