Hi, when I was searching the internet, I kept stuck with the W140. Except for parking warners, he actually has everything I’m looking for – and very important: NO leather. What do you think about it? According to autofocus, the price is quite luxuriant, to put it nicely. Here I come to a dealer’s truck of about 5900. What would you think would be realistic? I would have to count for a well-installed gas system again about 3-4000, wouldn’t it? Would the km-performance for a gas conversion un d then about 25000km still tolerable in the year? What do reasonably useful return warning costs for the car? A retrofit (must not necessarily be DB-original) would be useful for me (not exactly large parking garage at work). THANK YOU! Joe.