57 3600 help

[Trucks]

HI, I just picked up a '57 3600 for my brother, with a toolbox bed and a straight six from another car in it, its a 4spd trans with a granny gear 1st. Runs and drives good but I will need a rear end swap to get her over 55mph! Thats later though. This is alot older than what I'm used to ('67-72) Some questions I have now is:
*DO these trucks have a fuse box? If so where? My tailights and parking/ blinkers don't work. Part of it is because the clicker in the blinker switch is broke but I only have headlights that light up. Now alot of wires are just twisted together but I wanted to find fuses first.
*Where can a guy buy rubber boots to go in the holes in the floor where the starter pedal is, the brake, and gas pedal?
My brother and I will have more questions as we go I'm sure, THANKS