Of course not, but it could be time for a new thread Less than a year ago I picked up a 92 300TE 4-Matic with the Mosselman twin turbo kit installed. Detonation had trashed the pistons and the head. So the challenge that lies before me isn't "how can I turbocharge it?" but how do I build a shortblock that will allow me to turbocharge the F*** out of it?
Since there is a lot of similarity between the M103, M104, M60x engines, Ive come up with a few tricks.
1) piston oiling: The M603 piston oilers installed on the M103 block will provide oil dedicated to cooling the underside of the piston crown. With increased temperature stability in the piston, detonation is less likely. (note:M104 oilers will fit but spray a lot closer to the side than the M603 part does)
2) oil pump gear: Again from the diesel bin, the M603 oil pump gear is a turbo motor must-have. It's smaller size results in more oil pump rpm's. This mod helps ensure that there is enough oil for 2 turbos, 6 piston oilers, AND your engine bearings.
3) flywheel: There is room for improvement here too. The center section of the flywheel is only a single sheet of metal. (it has an M102 part #) The turbodiesel engines actually double up on the sheets of metal in the center section of the flywheel and omit the spacer between the flywheel and crankshaft. When adding a lot of power to a M103 it makes sense to use the same flywheel setup as the high torque turbodiesels.

Hopefully these mods will give my turbo gasser the legendary reliability of MB's turbodiesels. Aside from the aforementioned mods I've still got to make a decision on stroke, rods, and pistons.
The decision on stroke is really asking which crankshaft to use. I'm leaning towards the stock crank simply b/c it deosn't involve the outlay of any more cash. A 50$ M104 2.8L crank on ebay has had me drooling over the idea of a de-stroked high RPM screamer. Of course a 3.6L stroked M103 can be done with a diesel crank (350SDL, not the 300 SDL). I'm sure that it would have plenty of torque Unfortuantely that is a rare crank to get your hands on.
As for rods I think that the factory rods are some of the toughest rods around but I still don't trust them in my high dollar shortblock. A local custom shop recently quoted me $3500 USD for a set of 6 titanium rods. That is a LOT for a set of rods but would take all the worry out of ever breaking one. Not to mention the weight savings in the reciprocating mass
Pistons present a lot of choices. Fancy cast alloys or forgings? The high RPM screamer would likely get the lighter alloys. With an engine that is apart b/c of detonation the forgings seem the better route. On the downside though, the forged slugs require more running clearance increasing the likelyhood of a rebuild on an engine I never want to see inside of again.

So what do you guys think? How would you build your twin turbo dream mercedes?