Speaking of Minilites

Along with the 1275/Datsun 5 speed conversion I am starting for my
Bugeye, I have decided to go with a MiniLite type wheel.  I went to the
Panasport web site (www.panasport.com) and called the company from the
phone number there.  They said my size would be 13 X 5.5.  I then went
to the MiniLite web site (www.minilitewheels.com) and the size listed
for the Sprite is 13 X 6!  VB and M*** sells a copy in 13 X 5.  Who the
heck is right and what tire size should I get?
Mike MacLean-60 Sprite