RE: warbird racing
Tower Hobbies does not carry the World Models line. You can get them direct from Airborne Models, your local hobby shop or you can call Norred Aero Products ( ME ) in San Jose.
The aircraft that I believe you say is the Phoenix Strega for $99.00. Many are using it for racing even though it needs a lot of structure strength if you put a big motor in it.
Kevin Norred.
As for the Warbird classes, we run a entire different set of rules here in the Bay area. We have a world models class that you can use only a O.S. 61 FX engine. A couple years ago, I went to race in Sacramento and with the WOrld Models Stock Mustang and a stock O.S. 61 FX, we flew the tops of the pylons and broke out in Bronze every heat. I think it is a bottom silver, but if you put a performance pipe and fly a tight course, you may have a good silver plane.
I dont recommend putting .46 engines in them as they are very slow and tend to be unforgiving if you have a good breezy(windy) day. I like having plenty of power.