I think we are missing his point here. He wants to be a pilot, feels that having aircraft maintainance qualifications and experience will help him on his way and is asking if his auto mechanic qualifications can be converted. The short answer is no, but if he's already got technical qualifications, they will make for a quicker transition in getting his licence as he will already have covered much of the theory.
Personally, I don't think that having an engineer's licence will be that much help. Hours are what counts in the aircrew world and building hours as an instructor is more useful than working as an unpaid LAE. I know of GA companies using low hour co-pilots as general help when they aren't flying but I suspect that an LAE would be taken advantage of in a big way. The local flying club offers LAEs flight hours in exchange for maintenance and some have taken the bait. The club has an interesting concept of a fair exchange rate and I haven't seen any LAEs get a PPL yet.
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