I've read on another site
49 to 52 Plymouth and dodge car arm rest will fit and are metal
49 to 52 chevy delux car arm rest will fit and are metal
Info credit from post on other site. Deadzonetrucking. MotherTrucker
Good luck
The repos truck plastic arm rest I've purchased from classic parts have held up well for 4 years with not problems. They are actully made very well.