LOL. Buddy if the 1.5l Premio is underpowered. Then so is the 1.0l Belta. My friend has 1.5l Premio, I drive it frequently and its an awesome car. But only driven on HI OCTANE, your uncles car must have really high mileage or driven on LPG. ;; 
As far as the shape is concerned, I HATE IT, its horrible, the front may be just okay, but the rear looks like an old grandparents car. ;; 
Also Premio has wonderful mileage, NO need for CNG etc.
I haven't seen any Premio X's lately. They probably are mostly in Quetta area. Where NCP and smuggled cars work?