Thanks for the replies.

The truck was a stripped 1954 or earlier dual wheel flat bed. The engine is a 302 with a front center mounting plate (foot) but has studs slicking out on the sides in front which I presume is for side engine mounts. Carb is a Stromberg 2 barrel. Block casting number states 1955 or newer.

Starter has lever actuator on top with linkage going across the bellhousing. There is no solenoid. Is this the setup for a floor mounted starter switch?

So I guess the truck had an engine swap and the engine has 6V electrics? I’m trying to plan ahead when I install the engine in a 1937 chevy sedan.