Hello mates, after all of the trouble I had with the kit fitted by "Prestige LPG", who are anything but, I am happy to report the 650 miles and still going (early days I know).
The new system (Prinz) is running nicely. It isn't cheap at 1950 for the complete conversion, but you only get what you pay for.
Sadly I needed a bigger tank than the one they have fitted, so I only get 260 miles range, but at £23 to fill it back up, I can't complain.
I do have a massive grudge though.
We all know that diesel and petrol carry a high premium of TAX, but LPG doesn't. Doesn't stop the fuel stations taking the p!ss though. They set the price at half as much as petrol, despite only paying 29p litre at the wholesaler. It's a con.