How to see a difference between 7A camshafts and other camshafts?

Wed Oct 3 16:57:16 PDT 2007

I just bought a 20v NA engine for parts. The seller claimed that the cams
were the original 20v cams, but I suspect he gave me the turbo cams from his
20v turbo and kept the 7A cams himself.
I can't see anything that looks like a part number. One cams says something
like "034 102 AL" while the other cam says "034 G". This is impossible to
investigate. 

Is there any other way to find the difference? I have only paid 50% of the
price for the engine (which was something like $100), I won't pay the rest
if I got some 20v turbo cams instead of the 7A cams..

-- 
Regards,
ES

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