Help with missing bolts

[Phil]

Hi y'all....

Hoping to get some help here. I've checked my reference material and can't seem to find this info.

My 63 convertible, non tilt steering column is missing the firewall bolts on the lower support. I'd like to put some in but don't know what size they are (looks threaded in firewall).

Does anyone know what size bolt to put through there?

Here is a pic for clarity.

Thanks in advance.

Phil 

[Jason Edge]

Those are 5/16"-18 raised ridge head bolts, 3/4" long, usually  with an external lock washer, but have seen regular ridge head with split lock washer. There is also a wide 1 1/8" fender washer below the bolt and lock washer. I can set you up with freshly gold plated hardware for $12 ($9 after discount) and ship 2-3 day Priority from NC to WA for $10 for a total of $19. If interested email me at [e-mail] or just shoot me a PayPal to that email address.

[Phil]

Thank you Jason! VERY helpful!