Ahhh, we had this one about a week ago...
Anyway, there aren't any very good Tucanos out there (old ones anyway), and they are all Embraer Tucs rather than the RAF's Tucanos, which are manufactured by Shorts, have a Garrett engine and 4 blade prop.
One is under development at
Simshed, and looks far more promising
Igorski did an RAF repaint for a Tuc, so it might be worth looking at his site...