a while ago, I took a long look at the possibility of connecting the pentax 35mm af lens to mamiya 645 (ZD) too - and had a long conversation with mr. zörkendorfer about this. he actualy made an adapter for himself (lenstests), but stated that he would not sell it, since it was to wobely. nor would he make any on demand.
theoreticaly one has a few mm space between the cameramount and the pentax-lensmount for a adapter-solution. but its simply not enough to connnect the lens in a half-decent and stable way.
apart from the pentax 35mm af lens (which is much better then the mamiya version) - I dont realy see why one would want to do this, since all other mamiya lenses (that I know) are realy quite good and cheap.
Much thanks for interesting reply. Coming from SLRs I am tempted to have a Pentax 33-55mm on a Mamiya ZD ...