I had my supercharged range rover converted at profess auto gas in wales - highly recommended, extremely professional installation - even dealer commented on professionaly machined LPG injector rails. All fitted in 14 hours included configuration and ecru mappings! Even gave me a kit in case of issues and we needed to tweak the system remotely - no problems so far - about 7000 miles driven without complaint!!! Paying 68.9p / litre and vehicle averaging 20 mpg on LPG at half the cost of petrol. After such a success am going to convert rx!!! If you have any questions fire away as I spent 12 months researching LPG and suppliers!!!!!
James