yes, the NR .67 will use the 11CC bolt pattern. Just drill out the hole to allow the 4mm bolt to pass thru. The center hole, the flex shaft, may need to be enlarged also as the C clip may interfere. At least it does when using the Lawless lower. I've never put my NR .67 on a K&B lower.
Mitch, sorry, had to go back and look at my emails to Fred Howe on the lawless. The NR .67 lines up with the K&B 7.5 mount, not the 11cc. Still need to drill the holes out to allow a 4mm screw to pass thru.