I've been checking here and there and found this review:
http://www.people.vcu.edu/~rhklenke/rc/tecate.html
It seems thet the Tecate's wing area is 50 sq. inches shorter than the GP ultimate 40. they both have the same fuselage length and looks like the same wingspan too (altough I don't know for sure). The Tecate's weight in the review was 7 lbs, about 1 lb heavier than the average ultimate. I'm pretty sure I could find some ways to modify and reduce weight.
Anyway, It could me a nice challenge to build this model light.
What do you think?