yes,i actually used a chopped m3 with a 122 many years ago!!!few advantages,it is a hammond.not as loud as b3,not as many keys,not as good a sound.BUT,i used j smith,charlie earland sound,i1st 3 or 4 drawbars,chorus on/off etc.the pedals are junk,the lowere manual is weak-but it's a start.in the 70's my m3 with leslie cost about 1800!!!!,was light-2 could carry,and did the job.good luck-see if you can have your tech run a 1/4 output jack,which mine had,then you can buy a preamp for whatever lesli you want.not cheap,but most flexible.that way you might find a motion sound or leslie imitator(electronic)like voce's spin,save some $$$$ till you can do better.be blessed and enjoy