I need to find the rubber grommet that goes in the firewall for the EFI wiring harness where it connects to the computer. I've heard you can't buy them anywhere, is this true? I mutilated the one I took out of the donor car, only because it was a HUGE pain in the ass and didn't want to come out unless I cut it up and I would have never done it if I didn't know I couldn't buy another one. Anyone have one they want to sell or know where I can buy one? Thanks