I fitted LPG Stag 200-4 Kit in my Ford 1.6NXT 2005 and I am very happy with the performance.
No pickup issues, no starting problems, etc so far.
Have done about 1000kms and hope will continue with the same trend. I get same mileage as I run in Petrol(approx 11KM). I have not found any issue whatsoever after fitting this kit.
Any questions, you may write to agnagarajan@gmail.com