Firewall pass through

[protour]

Originally Posted by Build-It-Break-it

You drill a 2" hole in your firewall, 2 holes for the mounting screws. Mount the firewall pass through on the engine side around the harness, have a buddy tighten the the nuts on the inside of the car and your done.

Ohh so its just the 2 bolts, no sandwich plate on the backside to keep help pull the firewall flat if its not on a perfectly flat spot. The thinner passthroughs have more bolts and conform to the firewall, my concern is the 2 bolts may not suck it perfectly tight to the firewall. That would be remedied with a 1/8" backing ring with the 2 bolts. I can easily fab that up. I'll consider picking one of these up. Thank you!