Hi All, I picked up a 1980 Yamaha it175. The bike being 31 years old is five years older than I am. I am looking to use it for hare and hounds, classic events and even practice motocross. The bike on the surface looked tired but useable, realistically it needs a full restore, however I will only do the main items to get it race ready. Any good setup tips? Do other rear shocks fit and improve performance? I was looking at a set of yss gold valves for the forks, is this worth doing ? What do you all recommend?