yes you can.....

the sleeve of NS and NSR series uses to have the exhaust port a little bit higher than the RS series....but always work, when there is a difference between the original sleeve and the NS/NSR sleeve, the engine will run even better, because the higher exhaust port yields more top end.......this difference is very little (usually 0.1mm), in most cases there is no difference....

the conrod is the same for RS ans NS/NSR series......only MT12 and RR12 engines have different rods....