I have a similar problem with Venus, my 67 C10.

I have no e-brake pedal in the cab.

I haven't had time since getting her back from the shop to see what else is missing.

I'll hafta to look at that as well.

The e-brake issue is not that important to me at present, but I definitely want it fixed. This is something that I "might" be able to fix myself.

Need to find the parts first.

Need gauges "first" though.

I'll keep watching this post.

Davey