I have an 06 Magnum R/T AWD, with 110k miles on it now - never any issues with the 5.7. Although if you have a bit of surge at idle, and sometimes it wont start up right away, replace the cam sensor - up by the thermostat housing - way easy to do !! Won't be throwing any codes off, but once you replace it, rock steady idle and always easy starting. My car still have 50psi oil pressure when you get over 1500 rpm. 20psi at idle. . . everything works great. This was my company car and I have been only driver . . . if the car is in good shape, go for it . . .

Mark