srw to drw spindle & brake ?

[rs72z]

Ok guys time for some info.
I started to swap my srw 1 ton or so i thought over to drw today.
The question i have is did all of the drw spindles use the calipers that use one bolt and the slide on the bottom?
Mine has the two bolts like half tons do.

So is my truck not a 1 ton?

When i put the rotor on it fits but you can't put the calipers on with the pads.

Time for a spindle swap?

Thanks
Paul