Some clarification is needed here please. Did the bolt that broke belong to the pulley common to the fan and water pump itself? If so, one need only remove the water pump as it is separate from the pump housing and go from there. There is no way that a bolt that holds the fan or fan pulley has anything to do with holding the water pump itself to the pump housing. Was the bolt common to the pump housing...if so, then yes the pump and housing will have to come off. That is not typically a huge job on one of these cars.To get the housing off, is not a big deal but getting the other accessories out of the way is what one has to do. Go ahead and remove the fan or fan clutch , the idler pulley and the various belts. You can remove the radiator if you think access is an issue or to prevent any inadvertent damage to the radiator. I would not remove the AC condenser, simply shield it with a piece of plywood or similar for protection. You will have to remove the AC compressor bracketry from the water pump housing ( please do NOT disconnect the AC hoses when doing this ) and then one can just swing the compressor and brackets out of the way to gain access to the remaining parts. The power steering pump is also mounted to the water pump housing, but again its a simple and straightforward thing. Once you get the AC compressor and power steering pumps out of the way, then the pump housing is right there and easily removed. I would make note of the various bolt lengths that are involved due to the stack up of how the different items are sandwiched to the pump housing, some of them are just slightly different enough in length to cause potential confusion later on if one hasnt had these apart before. As far as the remains of the bolt, if youre lucky it will have some amount remaining outside the hole after you get everything removed, if thats the case liberal use of penetrants and some heat may be of use. If not, its drill and easy out time. I cannot caution anyone enough how important it is to drill straight and true and to go slowly and deliberately. Last summer I enlarged the head bolt holes in one of our lesser 4 cyl mopars from 10 to 11mm, drilled and tapped all 10 holes with nothing more than an electric drill and the required tap and a lot of prayers muttered under my breath. Mikey 62 Crown Coupe