Look at the serial number tag in the door jamb. If it's the same as ours, it's a 66. But like I said, they do it differently in other countries. So who knows? But that would be a 66 "here".
Michel, It will be worth the effort to identify the model year, whether it was a US, Canadian, or Export build, and then figure out changes made after production.
A '66 has different wire connections, different automatic transmission linkage, and a Canadian build had different electric.
Some quick Identification pics
1965 bulkhead connector has the power feeds connected with ring terminals
Canadian Starter https://www.forabodiesonly.com/mopar/threads/starter-relay-question.522304/post-1973990377
I have no idea what comes with an 'EZ' harness but from what I read here about EZ and Painless and similar harnesses they are not simple or easy to build. You may wish to use the kit to repair and 'rebuild' the existing harnesses. The factory had three main harnesses: Engine compartment, Instrument, body. The windshield wiper motor in the engine bay was also seperate (usually).