Tim-o,
Way back in the 60's the compressors were mounted on the head above the distributor, they were the a-6 (long compressor). In the mid 70's gm came out with the radial (short compressor) and they were mounted in the same manner but with different brackets. If I remember correctly, it had 2 bolts on the top for adjustment, a long bracket that went down to the front of the engine,and little foggy on this, but seem to remember the third bracket went back to the motor mount.
The v-8 brackets mount to the (early) exhaust manifold and water pump,(late model) to the front of the heads. Do you have power steering? If not maybe you could look at the a/c mounts that are used on the 235's, The compressor mounts low in place of the alternator and the alternator mounts above it.
