I am looking at aftermarket rear bumpers for my 2020 165 Hardcore. For my 2015 I bought a Backwoods BMP Bumper and this time I think I will try a Smith Grade one. My question is, should I cut the tunnel down to a 154" length (or shorter) and order a 154" bumper of leave it at stock length and order a 165" bumper? I have read the tunnels are thicker on the Harcores and less prone to bending, is that a consideration in this decision? Any guidance you may have on the subject would be appreciated.