If you look in the Frequently Asked Questions page of this website you'll see this question - "Where can I find out more about used Capri 14.2s?" Then click on that question for a detailed response.
Mod 1s were built up until about hull number 2900, but this could be off by a hundred or so either way. Likewise, I think Mod 3s started at about hull number 4300, but that's also an estimate.