My customers is trying to convince my customers dad to get a 1984 Porsche 944 for $900 alldata mitchell. However, the car need a new water pump and my customers was wondering how much it would be to get the part installed at a shop. What would be a good estimate as my customers is planning on going to more than one place. So included with the price of the part and installation is this a good deal? And is the car reliable?