This is all I could find man
http://www.discbrakesrus.com/cgi-bin...11918158035934
I do know a cheaper way though....
Pay $350 for the 5 lug conversion kit (you will also need to swap for a 8.8" rear end [direct swap, no modifications]) and there is lots of stuff for those, and you can get some better 5 lug wheels

(or you can just get some for the 8.8" rear end and stay 4 lug, that would be the cheapest way to go)
All that will cost you about $600-$900 depending on your choice of brakes, and maybe $600 more and you can get some new wheels.
$1,500 for that
the link that I posted is a little over $2,000 [

]
Im just leavin some options out there...
But that is all I can find right now....