Hi , I have the 302 ( A BIG gun ) & the 303,
These are the early ones, & My kind of gun, with a very long compression chamber on the 302, This was Export power, They then made the smaller 303 for the UK market. I had them up for sale ! Maybe the Pics are still up.
These are twice the gun the Mercury is . Cheers Ged.
Just had a look, ( Search haenal 302 ) The Pics are still up, The prices were posted & open to offers, Prices have come down since ! Cheers