Davis industries has them on ebay, Item #222808573940. Ugly as sin. Used to have a 3/8 single belt set up on my Buick whose engine is very similar to your 302 on the front where an a/c would mount. Was concerned with the amount of belt wrap around the water pump pulley so added an electric fan---never had to turn it on in 30 years. I will make stuff even when it can be bought and probably costs more to make than to buy but this is my HOBBY so time and money is not the deciding factor. The special head bolts that hold the compressor mount plate on in the picture were made from bar stock and heat treated which probably cost more than a ready made kit but "where's the fun"?

[img]https://s13.postimg.org/auirjd3lf/Straight_8_a-c_mount_001.jpg[/img]
[img]https://s13.postimg.org/mwe5dnpqb/Straight_8_a-c_mount_002.jpg[/img]
[img]https://s13.postimg.org/ft69y44w3/Straight_8_a-c_mount_003.jpg[/img]

Evan