As far as the PTO:
IF the M'18 came out of a cub cadet, it should have the same PTO pulley.
If it didn't, but the crankshaft is the same diameter, your KT17 PTO will bolt on.
Post some pix of it, if this is not the case.
Do take care removing the PTO assy as you do not want to damage the pulley or mounting flange.
You will also have to remove the lower muffler attaching nuts to get to the studs on the
upper PTO mount.
At times the old muffler does not want to come off the exhaust nipples because it is rusty, also the clamps are rusty.(don't beat on the old rusty muffler)
do note most times it is easier to remove the exhaust manifolds with the muffler, but taking caution not to break the exhaust manifold studs off while loosening the nuts.
(It sounds more complicated than it is)
Wiring:
You will find a white magneto kill wire coming out of the grommet with the 2 spark plug wires on the fan shroud, that wire, when grounded, will kill/stop the engine.
Since you do not have a ign coil, you will not need/use the coil power wire from the ign switch.
later on we will tell you, as Roland mentioned, how to wire up a relay to kill the engine or replace the ignition switch with one that has a stop/ground/kill position for stopping the magneto from producing spark.
Clear as mud?
