http://chevy.oldcarmanualproject.com/parts/1929_54/445.htm

Since you have a 54, here is the dealers' handbook page showing the accessory guards options.
Attachments
Guards.jpg (131.55 KB, 141 downloads)


"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."