For mounting a bed to the frame on a 2nd gen, there are at least 3, 1/2" holes that exist in the frame on each that work well. There's a slotted hole 2" behind the rear spring hanger on both sides. Also there are holes close to the overload perches on the frame. Then the front half of the bed it works well to mount through the existing bed brackets, they are more of a perch.