Hi Neil, I bought my conversion from Tinley Tech a couple of years ago to fit to my TJ. Quick delivery and excellent phone backup. I would use them again. The kit has done @ 30000 miles without a problem.
i bought my gas kit from tinley tech and its great and they are a very helpfull company to work with. i would recomend them to the diy'er
mot not a problem, insurance might want an enginers report but shouldnt charge you any more money