I would check with some builders about your goal. Cuervo, HPS, Kenz, etc. Yep, get the FCI, no box. 11.5 compression may require race fuel in the Oregon dunes (sea level). Or mill about .040 from the dome of the piston. (I did that on mine) Have your head ported by any qualified builder above, +1 valves, maybe +2. HC3, HDD5050 or similar. Do the oil mod, and crank bearing support plate. MSD or PC5, +3 TB. Head studs for reliability. DMC Force 4, Barkers, or Monster exhaust. Big bore are best. Swing arm about +4 or +6 at the longest. Use all factory gaskets!
If you haven't done any suspension, I would recommend that as real important with these mods. You'll be in the mid 6? for HP, so handling is important.
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'19 Can-Am X3, RS Turbo, 172 HP, 1300x15 STU #2 paddle, Tribute front, DynaTec controller, cat delete, GTP blow off valve, custom flame wrap, Bent Metal windshield, Blazer wiper, rear window, 48in LED light bar, 14in LED light bar, GTP LED side lights, S3 shock tower brace, aluminum rear pull plate, 5K Badlands winch, dual batteries, 5ft lighted whips, Rugged radio and intercom, interior lights, rock lights, chase lights, over $200 additional switches, YES, street legal with dirt tires.