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tom,
looks "funny"...with displeasure... also for me: I cannot understand what's done in the engine!
6640308 numbers looks real, but 911/83 is a fake for sure!
Opinion of a friend of mine is in the past original 911/83 was replaced with another 7R magnesium block (maybe 911/93 or /92 from non carrera 2.7) and made new self-made stamping.
Are 911/93 911/92 block exactly same of 911/83?
Finding original 911/83 is feasible? it worth? and parts into actual engine (crankshaft, rods...) can be re-used in the new block?
thanks and regards
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