Auto to Manual? (Sort of)

The 170 came out of my '65 Valiant. The 225 came out of a '66 Valiant.
In that case, you should be good to go. Everything should bolt up, but as said above, you MAY have to finish ream the crank for the pilot bushing, or have the bushing OD turned down a bit. NAPA offered a reduced OD pilot bushing for this at one time, not sure if they still do.