Checked my maths and I used 62hp (A10), either way the logic is still the same & you are far better off with a completely standard engine that already makes more power and has better torque characteristics.

As for $1000, I can't see your average punter getting all of those parts plus the engine work donefor anywhere near that. II'm not saying it can't be done I'm just saying that there's a grand in machining etc and other parts that need to be replaced while its apart.