I would seriously consider the potential head problems with any 603 engine. If the head has been replaced, you're OK. If not, there is a significant chance that the head will crack.

Check the casting number, located on the left side of the head behind injectors 2 and 3, before deciding on the car. The number will be 603-016-xx-01. 14 in the xx location is a potentially bad head. Numbers higher than 14 indicate a good revised head.

Wray