Ski Bob Parts help

[JDhiker]

Hi. Am am fortunate to be the custodian of a 1970 Ski Bob. I’m displaying it and watching over it for a friend hopefully permanently.

Anyway it’s missing the knob to hold down the handlebars. And a handlebar grip

I would live a close up pic of the know if no one has one to sell. I can have my Son 3D print one as long as it’s close.

But I’m looking for them if anyone has parts

Jim