Has anybody tried to fit the cylinder and piston of the KLX140 onto the 125cc street legal model? Both have a stroke of 54.4mm but the off-road version has a 4mm bigger bore (58 instead of 54mm) giving it 144cc compared to the 124cc of the enduro. 20 extra cc is about a 15% increase - should make a difference! Seems to me that this would be a quite easy and cheap conversion using Kawasaki factory parts. Any thoughts? Btw, the off-road exhaust fits onto the enduro, looks good and is not too noisy.