And whatever you do, DON'T ask how much money you will make during the interview. That discussion will come in due time. In my past lives I interviewed lots of people and when they ask how much money the job pays during the early processes, it tells me that they are only interested in how much money they will make as opposed to showing interest in the job and a desire to get that job done.
Also as a side note, my Dad also was a mechanic when I was growing up back in the dark ages. I learned much more from him during my youth than I realized. I am impressed that you want to follow in his foot steps. It sounds like you have a passion for this work. Show me someone that has passion for their work and in all likelihood, I'll show you someone who is very good at it.
Please keep us posted. Go get 'em!