Charlie:
I'm not so sure about that! The local dealers want $15k Cdn. more for a 99 and $20k more for a 2000 ML430
Admittedly the 2000 has improved trim and soundproofing, but $10k per cylinder is a bit much. Or is that $5k per inch of wheel diameter?
I think I can turbocharge for about $5,000, if there is a suitable kit out there.