jasrking, The parts you are seeking are listed in the 1929-57 Chevy Master Parts Book as Group 5.150: Extension - Strut, Parking Brake Shoe Lever. Left is GM# 475481 with an overall length of 7-1/16". Right is GM# 475482 with the same length. The screenshot below taken from the parts book lists all the applications those parts were used on. The great thing about that is the same part was used in both 1/2 ton truck and passenger car applications for all the year groups and models listed with each part number in that pic. Lots of potential donor vehicles!
Since you have an ad in the
Truck Parts Wanted forum, I will ad a reply in there in case it may help others provide leads on what you need.
