Go to the 29-57 Chevrolet Master Parts List and search for the part number of the antenna. The CMPL says, "fender type (right hand installation only)". 987188.
The part number 987188 was obsoleted (??) and reused for a glove box light.
Beginning 1958, the antenna number changed to 877740
Radios were an option. The original 1955 2nd installation diagram (template) and instructions would come with a kit you purchased to add a radio to your truck. NOS kits are rare so today you have to suffer a reproduction antenna. Make sure the antenna is an original preproduction and comes with instruction and installation template for hole location. It is up to you to determine if the instructions are correct.
There is a 2 part youtube video on the web. It's slow and I got tired of listening. He did mention that you want the antenna to be taller than the cab for radio reception.
Last edited by buoymaker; 10/17/20228:54 PM.
"Adding CFM to a truck will only help at engine speeds you don't want to use." "I found there was nothing to gain beyond 400 CFM."
