On the wish list for the JHH hawk engine is.....

K&B .48DF
OS.46vxdf

As far as the K&B.48D/F , better chance on winning lottery than buying a brand new D/F engine from K&B

OS.46vxdf when the next batch come out my advice is get them while you can or else you will be waiting another 1+years for the next stock

FAN-JET .50 is the only engine that you can buy now. I think JHH was working on a better d/f engine with jettengineering but that was late last year and have not heard anything since. Its a pitty it does not produce more thrust, giving more speed with the hawk.