Did you buy the rear wheel wells from lmc as well? The attachment points where they bolt to the bedsides is a common problem with the aftermarket bedsides. I know a few people who have ended up "Grafting" the mounting flange, if you will, from the old bedsides onto the new bedsides, in order to mount the wheel wells correctly.hope your's aren't the case.
looks awesome so far! Which wheels are going with?
Have a good one!
Ben Smith