Wiring harness grommet?

[88 Fox GT]

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

 

[silver1983gt5.0]

scrap yard or a restoration shop? check with mustangs unlimited

 

[RsStanG1987]

Get one from a junk yard. They arent hard to take out at all just use a skrew driver and take your time with it. Go at it from under neath and you should be fine. Ty 5.0 resto is that doesnt work.