Don't quote me on this im still new to the runner myself, but I think I read somewhere that you can just buy the trail trim and replace the stock 10-13(sr5/le) trim and that will clear you to put on the n-fab with out having to trim or use a spacing bracket.
I just found another supplier for materials so I should have some sets ready in a few weeks. I will answer all my PMs received and get a order que going. Thanks for the patience guys.
Interested in the spacers... PM sent