Firewall Connector

I am going to make my own engine wire harness. (Yes I am crazy) Anyways I was wondering where I can get firewall connectors. I want to use the factory style but i dont think i can get those connectors anymore. However i am not opposed to using an upgraded connector.:read2:

Do away with it all together. I took the connector out, removed the wiring connectors, drilled 3/16 holes through the connector and pushed each wire from the inside out after I reinstalled the connector housing. Looks like original connector without the weak link metal connectors.