I have to change the distributor in my daughter's 1998 Sebring with the 2.5 V6. Doesn't look like too bad of a job despite what some repair shops have told me. My question is that there seems to be two different distributors and I don't know which one to get. One has a .526 diameter rotor cam and the other a .475. Is there a way to tell what the car has now before taking it out and does it matter which one I order since it seems that they come with both the rotor and the cap. Thanks in advance for any help with this question and tips for the job.