If they are stocked in the UK then that may be your first place to check for convenience. Egge would likely be next choice if they can manufacture a 3.05 bore type piston or there is another type piston of similar bore, compression height, and pin diameter. Where it might get complicated is when you need an oversize. I don't know how thick the cylinder walls are on the AF engine or how far they can be bored out. It would be interesting information to know.