Section 115B(g) in The Central Motor Vehicles Rules, 1989
(g)The kit manufacturer/supplier shall provide a layout plan for retro fitment of CNG kit in the respective models on which any approved kit is to be installed, to the test agency for vetting and approval. The retro fitment of the kit shall be on the basis of such approved layout plan only. Testing agencies will be required to indicate specifically, the models and their variants on which the certificate will be valid.]
