QUOTE(bowlsby @ Sep 26 2003, 08:26 PM)
The Cardex will likely tell you the original serial number of the engine...and if you are lucky the transaxle too.
and this of course tells you only if the CASE is the original one.
no way to know really if any of the parts inside are the original ones.
a teardown will tell you if any parts have been updated; backdating, fortunately, is rare...
otherwise, you have to go on 'documentation' which is always iffy - you can document that something -was- changed and people will believe you. absence of documentation means nothing, tho.
even tho my very lo-miles /6 engine is the original - it lost a cam tower oil line during a prior owner's time and got 'uprated' with 'E' cams. original ? hard to misrepresent that one with the gear sticking out the end of the cam tower :-)