A few years ago we had a guest speaker at the Clinton Fly-In who gave a presentation on a similar process. I believe he was a professor at a technical university. His FAA-approved program will give you training (almost to the regular A&P level) to work on your C150/152, but the catch is your airplane will be de-certified and can't ever be re-certified. Good luck if you ever want to sell it. His program wasn't cheap either, more than $10K I think.