Ben,
I'd really like to know what a cessna 152 full engine job is likely to cost
Best to speak to your favourite engineering company for realistic prices. If you don't have a favourite engineering company yet, PM me and I'll put you in touch with a Cessna specialist (although I can't claim to be independant on this one, because I work for the flying school division of the same company).
On a more general note, though, please re-read this thread thoroughly. I think you will find that the grand total number of positive posts, excluding yours, is zero. Take a step back and try to think about that from a neutral point of view - which I know is difficult, because you are very deeply involved in it. I know what conclusion I would draw.
FFF
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