Same here with my Rush slips on's, didn't have a factory manual but pretty much every socket extension. Almost impossible to get at those bolts on the back with me not thinking/knowing about removing the bracket.

 

I've never had it take more than half that to do a complete exhaust. How much beer was involved?

 

You really need to understand the setup on the FBL and the bolts in question, I've swapped plenty of full exhausts myself.