Firewall electrical bulkhead
 

Im installing a ls engine in a 69 Camaro with Fast sportsman efi. Im wanting to mount efi ecu and transmission ecu in glovebox nice and neat. Then route all wires through firewall. What are the best ways yall have done this that is reliable and weatherproof (pictures if you have them). im looking at doing Deutsch bulkhead connectors at firewall so it stays looking good and works flawless. Any thoughts on deutsch connectors has anybody used them for this purpose before? I have attached a picture of the kind of connector im looking to use.