My 07E 68 has both RP and B&S (with knock outs) ..one of each. Wish I had all (4) keys to see if the other set was a match. I found the RP under the drivers seat, under the carpet wedged in the seat reinforcing area. Go figure. The Briggs fell out the body plug hole after pulling the orig carpet & parking in my friends driveway ...bet it was under the seat too. Lucky to have both!