Need help identifying year and model of Chrysler 45hp outboard

[Rexb99]

Can’t find model or serial number on this motor- I think this motor is from early 70’s given when my dad bought it used from someone else.

If anyone can tell me the year and model that would be very helpful as I need to purchase some parts for it

Attached are pictures

 

[Nordin]

Looking at the pics your engine is a 1967 or 68 year model with magneto ignition.
The 45Hp had two different ignition system in he late 60:es.
Magneto or battery system.