osuaero1,

I have had the Brillelli 25cc, 26cc, and have the 40cc on order for another project. The 26cc is currently on my GSP Giles 202 140 size and it runs great. I can't say enough about the Brillelli engine and the support that goes along with it. Scott and Mark at Brillelli have one hell of a business and I can't every say that I've heard anything bad about there product. I have had my share of problems getting into gas and Scott has been there all the way with help when I needed it. IMO the Brillelli 26cc is the best engine on the market for it's price, weight, and the support you get. I'm sure others will chime in and tell you the same thing.