Looks like the truck is a "True Twin-Screw". From the pic,I can't tell if the front axle is connected to a power divider,or if what I see is an air brake can. This truck looks VERY Similar to a tandem T.F. crane truck,I saw on "youtube",a couple of years ago. Your frame looks fairly straight,so probably not the same truck. The one in the video had a noticeable sag between the cab,and front rear axle. It had a V-8,which was running on 6 cylinders,at best,but didn't smoke.just had a BAD exhaust leak. They were still using it to install rafters on new homes! COOL!!
