Try to get in touch with Bruce Murray in Portland. He built a 300 for Gary Wilcox's ~51 pick-up and later converted it to alcohol in part to keep head gaskets in it. I believe it also had 3 Holleys. They did set-up a primer using a windshield washer motor and reservoir.
He is not an internet type, so you will need to call him. He is listed in the Inliner directory.
