Rear U bolt ?'s

Anyone know of a good place to find replacement U bolts? Going from a 7.25 to a Dana 60, would like to find a set of factory style replacements with the flattened section in the rounded portion of the bolt... Anyone using the Square style of U bolts??

Looking at Mancini / Ebay right now...

http://www.manciniracing.com/mancini7ubolts.html