The wingspan is 41" for the brodak kit, same as the Top Flite ARF. The Brodak 40 works pretty good in the Streak. Its a little heavier then the ARF Streak. Witht the Brodak 40 it flies a little fast, but its a nice speed. We use an 11x4 on it. It does the pattern nicely. The LA or FP 25 is better i think.
Ryan