7745 what year?

Hi:
I am thinking of selling my Crystal (maybe a mistake). I speak in hushed tones around her, I don't want her to know!

Anyhow, I'm looking at a 7745. How can I tell what year it is? I read posts and one said it has turbo problems in the earlier version - that so? I also hear horsepower numbers from 89 up, whats the skinny on this?
Ken

I looked at it today, it's too light for the no-till drill. Going to pass.