got aluminium inserts for cases done,engine in frame.couldnt use the tourqe arm even though mc18 swingarm 4mm narrower than mc 16.presume mc18 frame must be a bit wider at swingarm pivot point to accommodate tourqe arm.swingarm direct fit with 4mm spacer,mc21 rear wheel in and chain run spot on.got mc16 shock in with mc 18 dog bone and plates,need to change to mc 16 set up as mc 16 dog bone shorter.will play with ride height anyway.