Hi! Newbie Polaris owner here. Just purchased a 2017 last spring and have a few questions. Does the Rush chassis need tunnel protection? I have the 1.25 track. So planning on running 1.375 studs. Probably 120 or should I go with 168. All trail riding in Michigan. Also, what are some inexpensive mods I can do? Had a hard time beating a 800 renegade that I could walk by with my Firecat. Thanks for any input!