I previously had an mc28, but now i got an mc18 rk5 for a steal, my questions are

1)how do i fit a mc21 17" rear wheel is it a straight fit, do i need to make the hrc link for the rear suspension
2)mc21/28 front suspension does it fit
3)if not does the front wheel


4)just to clarify, i do the wire splice as per the mc21
5)do mc21 reed assembles fit straight in ,ie hrc/tyga reeds and stuffer's
6)how do i fit a mc21 dry clucth gearbox, is it just remove the gearbox cassete and fit the 21 in

i tried searching but got no definant answer