I have installed a L&R RPL lock in a TC renegade, it was a nightmare. The lock was too small for the inlet, the lock bolt hole didn't line up and I had to plug the old hole and redrill, the touch hole didn't line up so I had to move the barrel back and grind off the end of the under rib to make a good fit. The barrel got into the lock bolt hole so I had to grind the back of the breech plug off to get it out of the hole. I had to remove a bunch of wood to accommodate the lock internals, fill the gaps in the inletting, add a piece to the TC trigger bar so it would hit the L&R sear just right and a few other minor annoyances.
It came out OK except for having the send the lock back to L&R twice to fix glitches that never should have been sent out in the first place.
That big looking touchhole is just the allen head wrench socket.
Here is what the completed inlet looked like before I reblued where I took all the metal off the breech plug. Notice how far the lock bolt hole had to be moved off center to hit the L&R threaded piece on the bridal. I measured not twice but a half dozen times and made a direct hit on my first attempt at redrilling the hole after I plugged the old hole with a dowel.