61 gmc 3000 ?????

[granddaddys53flatbed]

So i posted over on the 60-66 gmc forum but I want to post here as well. I purchased a 61 gmc 3000. Really strange vehicle that has had some things done to it thru the years. The cab is really bad but I have another cab. The rear is shot but I want to put an 8 lug under it anyway. Whats odd is its a 10 lug rear and 8 lug front. Im sure someone changed that at some point. Ill try to post some pics too.
My Question is the 8 lug front is not setup for "dually" wheels. Is there a spacer I could use or another set of hubs? Or should I swap the torsion bar for the 72-87 front crossmember. I have an engine and trans I just need to get the rear end and front suspension/brakes sorted. Thanks