How much should it cost you to repair a blown head gasket on a 1995 Plymouth Voyager?

I did this myself. Twice, since I managed to muck it up the first time! ;) I'm not sure what the going rate for labor is where you are, but this is a Very labor intensive project. You basically have to dismantle the entire top and front of the motor to put new head gaskets on. You have to remove the front (passenger side) motor mount, mount plate, timing belt cover, alternator bracket, A/C bracket, and more. Which means you'll replace almost every gasket between you and the head gaskets as well. Upper intake, lower intake, thermostat, etc... While you're at it the timing belt would be a good idea if you've got some miles on it. So it won't be cheap, which is why I did it myself. It will probably take a good mechanic 2 full 8 hour days. Longer if he's not familiar with that particular motor. The parts shouldn't amount to much more than $150. My 95 Voyager has 170k and it still runs great.