I have an old 26" hardtail that I want to convert to Shimano SLX 1x12 (M7100) from its current 3x9 drivetrain. As the new 1x12 uses a micro spline hub, I am thinking of changing my rear hub from M475 to FH-MT500 (micro spline QR 135). Would I be able to use my old wheel and spokes with the new hub, as both the hubs are Shimano and have almost same dimensions/flanges, etc. I can't find new 26" wheels that have the microspline hub.
Or is it better use a Sunrace 11-51T cassette that uses the old Shimano HG hub? If I go this option, I am guessing I won't get the Shimano HyperGlide+ smooth shifting.
Also, is it possible to use a 32T narrow wide 104BCD chainring in place of my current middle chainring keeping the same crankset/BB. I can remove the smallest and largest chainring from my current crank.