firewall bulkhead for wiring

what has everyone been doing for the thru firewall wiring when putting these hemis in ? is there even room to use the factory three plug bulkhead electrical connectors for the wipers and light harness? i was thinking of fabbing up something out of aluminum like they do for street rods , any comments or concerns , pics would be great , what would i do without this site , thanks to all . dartman 440 ed :D
I guess it depends on what wiring you are using. I'm using FAST and they want you to cut 2" hole in the firewall to run all the wiring through.
Because I have the AC heater box, I didnt have much room to do that, so I ran the wiring thru 3 small holes instead. (They also dont want you to run cam and crank sensor wiring thru the same hole as the coil wiring.) To do that, I had to remove the engine side connectors from the harnesses so the wired would go through the smaller holes. Was a lot of work, but looks much better.