Yar go for the 50 tank as it's OK. When I didn't touch the rear suspension after the CNG installation, the car did come down a little and the shocks touched the body when passing through a speed breaker with five people seated. But I didn't change the springs and just changed the rubbers that are attached to the springs so that they don't touch the car's body directly and the problem was solved.
The spare tire has to be retrieved from car's inside after inclining the back seat as is the case with all hatchbacks with CNG. And the filling valve is installed just adjacent to the petrol filling area.
The contact of the CNG shop is
40/3 , I&T centre, Sector G-8/4, Islamabad.
Telephone: 2255772
Owner's name is sultan akbar.
The guy has good rates but you will ned some other expert for the car's tuning stuff.
And in the last, yar I'm tired of this simla guy boosting of his extremely stupid 660 cc car and that also automatic on every forum. You should be ashamed of owning a suzuki and hiding it from others rahter then telling it to the world.......