Where can I find a pinion nut locally (besides dealers)? Have chaecked parts stores and no luck there. Who / What type of places would have these?

Thanks.

Look in the yellow pages for an industrial truck repair shop, here in indy we have places such as joint and cluth and truck parts specialist that carry Dana stuff.

http://www.drivetrainspecialists.com/categories/small-parts/products/product-714.html