You may have trouble finding one, but the Reatta is not too diffrent from many other cars of that era. Also there is many people here that are very well versed in diagnosing issues with Reattas, so you may be wise to tell us what your issue is h on here. Granted we can not fix it from here but we can point you in the right direction, let you know if your mechanic is just changing parts or has a grasp on what he is doing, and even give you an idea of where to find the hard to find parts.