Normally you must stick with the correct size and year to insure all the computer controls and emissions systems work properly, however, in this case, I happen to know a fellow who dropped in a 3.5L in his mother's car. All the mounts and brackets were the same, and even the same Engine Computer worked. What I do not remember is the years of the car and the engine, so there still could be some differences that are not interchangeable. This is a rare instance where two different engine sizes interchange. Do not expect to find that very often. Also, we do not have emissions testing here, so I cannot address that either.
Friday, December 16th, 2016 AT 11:44 AM