Originally Posted by Weasel

Not the heads, just the intake manifold. (hence the intake reseal on the estimate)

That is a big job... but you can get the radiator cheaper yourself as well as the waterpump. I got my radiator from here for half of what they quoted you... and it is a good qualith radiator. (I got it over the OEM radiator at employee cost)

I'd see if you could search down the parts at a better price and just pay their labor, you could save a couple hundred that way.