It appears the new Mercedes 4 valve/cylinder V-8 will be available on the new S class. Any word when it will appear on the SL. The new 5.5 litre 32 valve engine is suppose to put out about 385 horses and the 5 litre V-8 about 315 h.p. I am holding back on my next SL purchase for the new 385 h.p.engine which should be available on the 2006 or 2007 model. I suspect the new engine will debut at the same time as any major body modification (SLR style snout?). What's the rumor mill saying?