69 barracuda dash to firewall bolts
I can't remember length, but i think it is 3/4 or less.
I had to "massage" a bulge in the metal to fit the driver side.
I omitted putting one in the hole directly above the steering column as it had too many swear words involved.
Dunno if it will ever help, but it might be handy to be able to drop column and access back of dash. Fairly minimal effort, especially compared to some of the other mountains climbed to make things work on this machine.