Wiring harness A Body firewall entry point

[kochevy67]

I am currently wiring my 67 Chevelle, the question I have is where did you guys enter the interior from the engine compartment with the engine harness. I have a painted firewall and am mounting the ECM and trans controller in the car under the dash. I would really like to see some ideas and pics if possible before drilling any holes. I am anal and like things to look neat. Oh I also am using the factory harness for the LS2. Thanks.