Solid axle has the hubs in 5 X 5 1/2:
http://www.solidaxle.com/productcart...&idproduct=139
The solid axle hub will also
further narrow the axle WMS to closer to 61". The big plus is you can run stock 14 bolt shafts, so big savings there.
I am trying to find the vendor with the 5 on 5, but that is another option. Note the bolts woudl be closer to the center hub bore. You will also need to make sure that your wheel centers will wok with the hub diameter.
Edit, I believe another company here doing the custom hubs is the GMR, they were designing a while back hubs for 35 spline axles; not sure what applications.