Hi,

I have fitted MC18 barrels to an MC16, the barrels went straight on. (I got a cheap engine on ebay that said MC16 on the item, but it turned out to be an MC18. The carbs go on but you need the MC18 rubber as well as the carbs. The airbox side of it goes straight on.

I'm about to try fitting MC18 pipes to see if I get a power boost, if I can get them to fit.

Mat.