Oh I thought it was a modded E300! Have you ever driven one? anyways the German manufactors agreed on a speed limit thats electronically controled. IIRC it's 155mph.
Still a nice benz.

Thanks morfiend

Yes, I have driven a E300-24valve. It had alot more power than mine for sure. I might be swapping the engine in mine some day, but not for the 300. I can't upgrade it to a 6sylinder with approval from the authorities here, but a 2,3 or a 2,5-16valve might work. That would be a good enough upgrade for me.