Just bought my first van A 1965 Dodge A100

Another question for all the vannies, How do I figure out what size 6cyl. my van has in it? The guy I bought it from had no clue what he had.He bought it to restore, ran out of time and there it just sat inside his garage.

Again,welcome to the site
hit the junk yard for the wheel,
take you measurements..(dish,hole to hole,center hole width,rim width.)
take a tape measure and info and go huntin...check for old aspens,darts,valiants.
As for engine displacement,look at the front of it...between the upper and lower hoses as they are attached to the engine....see that small rubber hose stuffed in there attached by two small hose clamps? if that hose and clamps are only an inch and a half or so....i mean a really tight fit...you have a 170 c.i. slant 6....if that hose is closer to 2 1/2 to 3 in....and doesnt look as hard to replace,you got a 225 c.i. slant 6.

Mine is on 14" rims, they will accept 15's as well obviously, just watch the wheel well clearance if you are going really wide.

14" tires (for hot rods) are getting scarcer, 15" tires are still widely available and cheaper in my experience.

225/70/14's