1972 D100 225 / Slant-6 info sought...

[Button]

I found this "survivor" D100 on a ranch nearby for sale cheap. I relaize it is NOT an "A" body like our Swinger, but I was hoping for some help. It has a 225 in it with three on the tree and manual steering and brakes. I have enclosed some pictures to get some information on this particular engine/drive train combination.
1st, is the Holley carb stock?
2nd, whats the rear axle in this truck, same as used in cars?
3rd, what is the HP and torque numbers for this engine?

 

[66340SEDAN]

The Holley carb is stock. The rear axle is an 8 3/4 rear, wider than a car but could be narrowed to fit anything, keep in mind new or modified axles would be needed. The rear diff will fit any other 8 3/4 rear, brakes and backing plates will interchange too.