Cannot guarantee for a '64, but give American Autowire/Factory Fit a call. They have a seperate catalog for the OEM reproduction harnesses and if you read all the way to the bottom of the long list of harnesses for your model, you just may find a fuse block. I went this route on my '68 and it cost me about $75.
As to the firewall bulkhead, do you have a problem with terminals or with the connector body? The terminals are replaceable within the connector body and you can get those from AAW too.
As to the firewall bulkhead, do you have a problem with terminals or with the connector body? The terminals are replaceable within the connector body and you can get those from AAW too.