64 C10 Accelerator Pedal

[Leverhead]

Hello. I'm looking for a stock replacement pedal for my '64. All i'm finding so far for '64 are plastic ones that use 2 mounting studs (3rd pic). The OEM pedal that was in the truck mounts to the floor with 2 bolts (1 & 2 pics), has a metal core, and is hinged (metal) at the bottom. There are 2 corresponding threaded holes in the floor....no mounting studs. The factory manual shows the bolts holding the pedal down to the floor. Has anyone used these replacement pedals...and are you bolting it down or using studs? Seems bolting it down OEM style thru the thin plastic tab on the bottom of the pedal wouldnt last long. Thanks.