4.75" bolt pattern??

[62BT409]

I know at times I am not the brightest bulb on the tree. But I do know that you only learn by asking. On FleaBay there are these adapters I came across (I do not need them) but it mentions SBP to 4.75" pattern.
Am I missing something here?
http://cgi.ebay.com/ebaymotors/mopa...ies?hash=item35a2d9805d&_trksid=p4506.c0.m245

 

[koryliss]

I think this would be used to convert to a non-Mopar rim...

Kory

 

[71DartGuy]

A lot of chevys used that pattern didnt they?

 

[wracks71]

chevy bolt pattern.