RE: plans for the Fiesta?? Where??
To my knowledge, the Fiesta was only sold as an ARF. I don't believe anyone is making/selling them anymore. I bought 2 of them 3 years ago from Planes Plus. The ARF has some minor issues. It is difficult to place the tank over the CG and the servo tray is too high (the rudder servo rubs against the wing and the elevator and throttle servos come real close. I adapted to all of these issues. I put the rudder servo back by the tail. I was running a YS110 so I needed tail weight and I used MK bell crank for the elevator because fitting the push rod was very difficult. I removed the factory installed servo tray and installed my own a lot lower. I enlarged the area forward of the servo tray and installed a 10 or 12 ounce Hayes tank right over the CG. I think you could find a better ARF/Kit than the Fiesta. It does fly well but not an easy plan to install your gear into.
If you really want plans for the Fiesta try calling Planes Plus.
Ron