2008 Chrysler Sebring code p0340

Hey y'all,
i have a 2008 Chrysler Sebring convertible
LX 2.4l and recently had taken my vehicle
to an auto shop since the engine light
came on and through diagnosis the code
P0340 reveals it to be: camshaft position
sensor curcuit. So I took the car back since
I wanted to change the sensors myself yet
when I wanted to purchase the camshaft
sensors through auto zone and eBay..,
some indicate that the VIN-K requires 2 of
the sensors?? I looked through my VIN and
indeed the 10th digit contained the letter K,
and I assume this refers to the engine
type? Can anyone verify this? Nonetheless,
if that were to be exact then where are the
two camshaft sensors located then?