Yes that’s a Chrysler built motor. The ID plate on those is inside the cowling….in one of the four corners. Maybe on the front port side or maybe on the back port or starboard side. INSIDE the cowling and usually totally encased with dirt and grime.
Nice running motors. The pic shows the ID plate on my Chrysler built SeaKing 9.6. The textured cowling in your pics looks exactly like mine.
