RE: Webra vs. YS?
Webra VS YS:
Gotta go with Razor. Buy the Jett pipe now or you will go to sleep flying that thing. Think the same pipe will also fit OS and some others, so not a total fixed thing. Have flown T-34s with club racing with stock Webra 50. May take a little prop above the OS, but nothing to talk about. My fastest t-34 engine so far has been the Thunder Tiger 46. Have had only 3 races on it so far, so dont know how it will hold up. Overall best bet is the Jett 50 like the man says. They take some abuse and keep on screaming!