Philipj ,
Still doing some internet hunting for these rare bolts .
They were discontinued by GM in 1981 .
You never know whats going to turn up .
Dan in Montana has a napa store as his main business .
He also buys & sells old time GM parts .
I've purchased many parts from him over the years...........always good stuff .
Send Bruce Bugay in Virginia an email .
Tell him what you need & include the part # .
[email protected]I've purchased many many parts from Bruce............always top notch parts .
Stop in any Chevrolet dealer parts dept .
ask them to do a nationwide parts search ........bring the part # .
George
'54 3600