DEAR FRIEND I HAVE A NISSAN MARCH 1300 CC WITH A SLIGHT DIFFERENT ENGINE DESIGN .....80 PERCENT OF PPL SAID THAT I SHOULD NOT INSTALL CNG IN IT BUT KEEPING IN VIEW THE PRICE OF PETROL IT WAS REALLY DIFFICULT I HAD TO THINK TWICE BEFORE GOING OUT ON CAR ....BUT AFTER A LITTLE RESEARCH AND EFFORT I FOUND OUT A WKSP IN ISLAMABAD WHO INSTALLED THE CNG IN THE SAME CAR AND MODEL ...I TALKED TO THE OWNER OF TTHAT NISSAN MARCH AND HE TOTALLY GUIDED ME ...SO I THINK U SHOULD CONTACT PPL HAVING VITZ WITH CNG AND AUTO TXMN ...THEY CAN GUIDE AND RECOMMEND U IN A WAY THAT NO ONE CAN ...SO TRY LOOKING OUT AND BEST OF LUCK ...IT WILL GIVE U 90 KMS IN 230 RUPEES ...