1963 or 74 Parts needed

We found a ski nautique hull and trailer yesterday sitting in someone's yard and talked with the guy and he sold it to us for 175 bucks. It needs all kinds of stuff and I wanted to ask if any of you Knew prices and where to get the stuff. The only issue is the title says it is a 63' but all the pic I see of one it looks more like a 73' I will try and take pics so you guys can tell me what you think.

It needs;

Engine $$
Motor Mounts $$
Electronics $$
Seats $$
Gauges $$
Engine cover $$


Thanks