Got the adapters in.
They fit haha
and heavy
But lighter than the wheels, 42 lbs.
After seeing a dropped square at Lowboy Motorsports with a CabnChassis width axle I might just use the SRW 14B as is. The CnC axle pulled the wheels in a little too far for my liking.
When I get some space in the garage I will mock up the SRW axle with adapters/semi wheels and take some measurements and compare them the to the fender width with pictures. I have to tear the SRW axle ends apart for disc brakes so I may mount the dually hubs on the SRW axle and make the CnC width axle and take some measurements with the semis for forum data.