If anyonr is interested I have just bought an engine made by Just Engines here in the UK. I have bought a Leo .46 and several bits over the past couple of years and found their knowledge and service excellent.
The engine I have ordered is their modified J'En .57 in a .40 shell !! 1.8 bhp WOOOOOOOOOOOOO
Let me know what you think of the site
http://www.justengines.co.uk/