just had mine fixed
$3,105.02.
Went in for code P0016 because I couldn't pass inspection.
parts list:
intake manifold gasket
timing chain
timing chain
engine variable timing solenoid
camshaft position sensor X 2
flanged hex bolt
timing chain tensioner arm
guide
valve rocker arm cover x 2
crankshaft oil seal asy
silicone sealant
oil filter
oil
timing chain
bolt
antifreeze
I know I have repeat parts in there but they show different part numbers I can post them all later.
car runs like new no more rattle at start up, no more rattle while driving. I'm at 103K miles. about 95 tuned on Livernois Stage 3 tune.
I'm debating putting the stage 3 tune / 3 bar back in. My car ran ok with the stage 3 tune before this repair but when I flashed it back to stock to take it to the dealer it seemed to run a lot better and more powerful

maybe the car wasn't responding to the tune properly because of the engine codes and mechanical issues ??