Not easily. You are talking about a powerhead removal, gearcase removal, mid-section disassembly and replacement, steering bracket assembly replacement, plus assorted parts changing to that section including mounts and then you have to check and see if you have the correct bosses on the block to add the small tower shaft that is used to advance the timing. By the time you got everything together you would be over the cost of a replacement small used engine. Would be better for you to source a later model 6hp or a newer 4 or 6 deluxe.