vespa px 200 CYLINDER: fake VS real TRANSFER PORTS / FMPguides

the original piaggio 198ccm cylinder of the Rally 200, p200e and px200 vespas. 12hp=9bhp, only 1 real port and 2 fake Transfer ports (only inside the cylinder but closed outside) why they did it like that? my guess: cheaper cyl and no need to work on the engine case. very convenient for OTUNING: u can remove the exhaust manifold stub :)
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[@martibo3263]

Hi,is there a difference between the Rally - early p200e- 200 barrel and heads and the later versions and is there a way of checking?Many thanks