I'd go ahead and keep the Alternator if it's a decent installation. There's not a lot left to do. Headlight bulbs (I always go with sealed beam Halogens.),dash light,tail and marker light and dome light bulbs,horn,and resistors for the gas gauge and heater motor. Or you could probably use a later heater motor. Might even be able to use the stock gas gauge too;I don't remember changing one when going six to twelve volt. The price is certainly right. Looks like a pretty solid truck,and the dump parts are an added plus. thumbs_up
Speed


1954 GMC 350
1957 GMC 1/2 ton
1962 Chevy C-30
1952 Chevy 6400 dump bed project truck
'98 Harley FLSTC
'66 Pontiac Catalina
'76 Chevy 1 ton Duallie
'84 Bronco II
'78 Dodge W-200
'81 Toyota 4X4 truck