dont buy unless it is imaculate and super cheap like $500 max. Then find a wrecked 2.4 stratus/sebring and swap every thing in including trans and harness computer... if you have a grey key you will need to get the 2.4 computer programmed with the VIN for the car you are fixing.

The 2.7 is very difficult to find a good one in a JY, a lot of times they will not give you even a 30daywarranty because they know what a pile of garbage they are. It is not worth fixing as a 2.7 car. You would have to be in love with it to even do the 4 cyl swap.