I have a 1985 chevy s10 regular cab long box truck that I'm putting solid axles under. The axles are square body chevy 6 bolt axles. Front and rear gm 10 bolt.the problem I'm having is the rear leaf spring perches on the rear axle aren lining up the the leaf springs on my truck. I go the drive side leaf spring to line up but than the passenger side sticks out too far and all the videos I've seen of people putting six bolt axles under their s10s they bolt right up

 

You'll have to cut the old spring perches off the 10-bolt axles and weld new ones on. As far as I know, there aren't any full-size axles that will bolt right up.