Never installed K80 stock only. Don't have a matching forearm. It has a wood pad that is also checkered. I belive it is a number 3, but not completely sure. LOP seams to be 14.75" to the end of the pad (which is a little over 1/4". It has a couple very shallow scratches in the finish on the left side that don't go to the wood. I'll be happy to answer any questions. $700 + actual shipping Dess
Approximately: DAC is 1 7/16 Drop at Monte Carlo is 1 5/8 DAH is 2 1/8 So slight slope for more universal fit. The measurements are from low ramped rib.