Can someone please tell me where I find the pre-molded engine breather hoses for 2004 crossfire w/ 3.2 engine? I also need a window motor regulator for driver side and new front turn signal housing components. Its disturbing I can't locate some of this basic stuff.

 

Probably only on Ebay unless there is a Mercedes part that is the same.

 

Your car is basically a Mercedes 2003 SLK 320. Use any online Mercedes part dealer, Or FCPEuro.
RedLine Auto parts online has parts specific to Crossfire. You can probably find all the window stuff there. It will have come off a salvaged Crossfire.
The turn signal can probably be repaired. Use the search box upper right corner of forum and search for turn signal.

 

NeedsWings Performance Products. Part Load Crankcase Ventilation Hose Assembly m112

 

That is part of the headlight assembly, they are easily available and cost over $400 each, even used ones.

What exactly is wrong with it? I find it odd you are not asking for the headlight assembly but instead the "turn signal housing".
What are you really looking for?