My dad and I have done two together, engines built elsewhere but we put them in/took them out, we do all the dirty work (and clean work) on our cars. NO idiot mechanic ever touches our cars unless it's for an alignment, even the specialists mess it up. If you want it done right, you do it yourself. We're not BMW guys though, all the work is Porsche. The BMW didn't come along until a year ago when my dad bought it for my mom. Luckily everything on the BMW is SOOO easy to work on so it doesn't cause any problems!
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