2008 Sebring Convertible engine clicking
 

My 2008 vert has 41,000 miles and has been having a serious clicking in the engine. It's not the injectors, because it's so loud, other vehicle at the red light look over like I'm driving an old Hyundai.
The dealership in Las Vegas just replaced the heads, cam shafts, rocker arms and some other internals. I picked up the car yesterday and today the clicking came back.
I'm getting fed up with this piece of crap.
Has anyone else had this problem?
I'm thinking this is my first and last Chrysler purchase.
I'm going back to to Corvette if I can't fix this.
Thanks for any help! :o

By the way, this is the limited model with the 3.5 V-6.

rockers need adjusting probly, check timing, try octane boost, see if any of that helps

Same loud ticking from the top of the engine.
 

This has gotten considerably worse recently. I have been told by a Chrysler guru that in the 2008 Chrysler Sebring Limited 3.5 there is an entire rocker shaft assembly. I was advised to buy the updated version and that it was a pretty simple install.
Here's my problem. I have searched and searched the internet and I get many different parts that would fit the Pacifica or the 300 or Charger etc. but none definitively matching the 08 Chrysler Sebring Limited 3.5
Can anyone guide me on how to go about finding this part number so I can be confident I am getting the correct part ??? Any help would be appreciated...