Kevin , Here's a photo of the locks that I purchased
back in 2012 .
The ORIGINAL GM part # was - GM # 839152
Superseded to :
GM # 3835842
They are available GM NOS @
Dan's GM Obsolete
Chinook , Montana
phone : 406 - 357 - 2615
Dan's has ( 25 ) - GM # 3835842 in stock
'54 3600
George
Wow, Thanks for sharing that information!
Kevin