V6 or V8?
There are three types of starter for the V6 that I know of, going thru the drama of finding the correct replacement for a VP V6 myself ATM, also there are some that MAY require shimming, compounded by the sub standard quality of inferior copies of OEM brands it is getting harder and harder to find good quality replacement parts at a reasonable price.
Are you certain it is the starter making the noise?
Is it a knocking/vibrating noise?
Strange it is just in reverse...
If the replacement starter is a different shape maybe shagged engine and G/box mounts are rearing their ugly head...