a friend of mine received the full underbody skid plates and it connected directly to the shrock bumper. He has a 2 inch lift also, and I think the version of the underbody skid plate he ordered from jim was made for the 2 inch and shrock front bumper. Maybe you need to mention to him that you have the shrock front bumper as well.

I'll post a pic when I can, it definitely looks different from some pics I have seen here on this forum.