Im not sure of the kingpin size difference between the m920 and conventional fithwheels. I was wondering if there is enough size difference to make a split, bolt on shell that would bolt over a standard kingpin to make it the right size for the m920 fithwheel? I thought it would be nice to be able to leave the original fithwheel on and still use it with the smaller kingpins but maybe it wouldnt be tough enough, it would be bad if the "shell" cracked up and went away.
Ross
Ross