70 duster: updating, and a no-dough pro-touring makeover

that sucks. im going to do some kind of ac on my duster, i jsut need to decide which route.
i think its the idler setup, that didnt look like it was going to work out to me, but it was worth a shot. i try not to add anything negative to some ones build thread or attempt. it looks crooked in every pic, but hey maybe its just the pics. i dont like the serpentine grooves on the idler, running o nthe back of the belt. i know they used idlers on v belts, but did they run on the back side of the belt? i think ive only seen them in side the belt pushing it out, i dont know if a v belt is made to run that way.