Well I'll be darned. Mosselman Turbo, in Holland, offers an intercooler kit for the 602/603 turbos used in the 124/201 chassis. Claimed power increase is roughly 15-20%. There are almost zero details or specs, just a hint that they exist, and the before/after peak power numbers. A Google search turned up prices in the $1400 (Euro) range, so it ain't cheap. Anyone ever heard of these suckers?
http://www.mosselmanturbo.com/index2.htm
(click "Intercooler" at the center/bottom after the Flash crap loads, then mouse over the down arrow in the top/right corner.)
Comments? I'd kill to get a copy of the installation instructions, I want to know what's involved. I could sure use an extra 30hp, I'm just not content with having the fastest MB diesel in North America short of the 98/99 turbos! (And those, btw, put out about the same peak power Mosselman claims for the 603 kit - ~172hp.) Mmmm, 0-60 in eight seconds...
