Hey, I have a 97 Chrysler Sebring coupe with the 2.5 mitsu v6. In the gates manual for timing belt replacement intervals it states that the interval for replacement is 60 000mi in all parts of the states except for CT, CA, and MA, so im like wtf these states get 90 000mi interval? What would be the explanation behind that? How difficult a job is it to do and are there other things to watch out for like water pump and seals etc? Thanks.