Anyone got any bright ideas how to prove the age of an engine (for emissions regs - don't think an '86 motor is gonna pass 2005 emission levels!) without having the chassis number it was from??

Its a mazda engine and they insist they must have the chassis number! Buggers.

Hold on, just found this...

http://www.locostbuilders.co.uk/viewthread.php?tid=31198

Which helps quite a lot!

Any further thoughts??

PS. I may be new around here, but rest assured I'm not actually a nutcase who just talks to himself!!