I'm looking at buying one of two different 2002 GTX's. One has the 951 DI with 50hrs and the other has the 4Tec 155HP with 80hrs. THey are both priced within a few hundred dollars and appear to be in about the same good condition. I would like to know from anyone who has owned similar models with both engines which they preferred. I'm leaning towards the 4-tec unless anyone can persuade me otherwise.