So I needed a heater core for my 95 caprice. I went and bought one at auto zone for 69.00 and it was a nice unit and installed fine. Works great. A year later I needed one for my roadmaster wagon. (same part) I found one at kragen for 49.00 . I went and pulled my car all apart and opened the box. The heater core was really thin with way less heating area. I was thinking about not installing it and returning it. Well it was late and my car was apart so I put it in. I noticed a big difference in heat output. It sucks now! I am bummed! So if you need to do a heater core watch out! Do not make the same mistake I did! I think eventually I am going to swap it for a autozone one! Yea its that bad!