One more question- what's the cost?
McKim is n Iowa IIRC so shipping might be better for me to use him.
All over the web, that guy seems to be the go to source on Spyders.
To the OP, I had one of my 14x6 Spyders on the back of my Satellite and the only issue was the specific lug nut requirement.
They take a n "ET style" (part cone, part shank) nut but with a shorter shank.
There's an ebay seller that hand makes them at $80 and up for a set.
I bought an ET set for $22 and am going to try milling off some of the shank.
To be fair, the ebay guy replicates the correct shape as well.