The quote I got was from www.driveandview.com and they are based in Dorset, Poole. It is quite far down the country for me to get to so by the time I get there to have the conversion done, it will wotk out quite dear. I'm on the good old lpg, but would probably stay the night and soon the costs will add up.
I would like to do the full conversion with the headrest screens for the kids, but might go for something that plugs into the cigarette lighter.
I was originally going to purchase an ls430 premium pack but the air suspension put me off! Would've had it all in there but not meant to be. I understand they don't go wrong (suspension), but if it did, I'd be out of pocket pretty sharpish!
Let me know if you find anything on the above.