blumby,sorry mate went through spares i don't have any that are not assigned to mowers.
these photo's might help other members find the right motor for you
good luck as they are the same as the rotomo and sheerline heads.
pic 1 i think is a late 125 barrel,it doesn't have the port covers
pic 2 is a victa 18 125 head exhaust port is flat
pic 3 is the type of head you are after,this is off my sheerline
there are rotomo engines on ebay but they are pricey
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