2003 Dodge Ram 4.7 liter

I'm learning the hard way about the 4.7

I had no idea about all the problems with them till I bought an 05 Grand Cherokee, yesterday. It more than likely has the broken exhaust manifold studs. Didn't notice the exhaust leak during the test drive cause we had window up and air on.
Soon as I bought it, stopped for gas on the way home, had the windows down with I started it up. Sure enough, tic, tic, tic, tic, from the drivers side manifold.
And to top it off my check engine light is now on.
Kind of stuck with it now, but did talk to the dealer where I got it, and taking it back on Monday to let them check it over, and see if they can help me out with it. They didn't really say they would fix it, but look at it and see.