Fuji Imvac BT-50 EI Gas:

Mejzlik 22x8 almost 2 gallons with Amsoil at 50:1 -- 7100rpm solid

I would have never bought this motor, I won it at a funfly, I must say at only 6-8 ounces more than the DA-50 RTF and over $150 less it rocks pretty well.