you need a standard rotation water pump and then you'll need the right brackets and accessories.... if you have powersteering it can be a little painstaking finding a bracket if not then an alt bracket runs about $10, $15 if you want it chrome.... depending what side your water pump is dumping on will decide what bracket you need as well.... if you have a drivers side dump then you need the 70s 302 bracket, i've got one that i'd be willing to part with for like $25.... the passenger side dump bracket... well it'd be easier to make your own then buy one... they go from anywhere between $75-$150, i'm actually working on getting one written in CADD so i can send it to a CNC shop and have a few made in billet alluminum.... i'll see what they cost to make and decide what i'll be selling those for.... march also makes a Vbelt powersteering bracket they're around $80 from summit i dont know what pump they're setup for though....
http://www.jmcmotorsports.com/catalo...rnator%20Parts
second page has the brackets alt,
http://store.summitracing.com/partde...9&autoview=sku
heres the power steering brackets...
next you'll need to know what balancer you're going with 4 bolt or a 3 bolt?
since its a 5.0 then you're probably using the internalley balanced setup which means you'll need a 4 bolt pulley, which you can get on ebay pretty easy you'll need a 2 groove for power steering or not doesn't matter and a single groove water pump pulley.... i've gone through the whole mess of brackets and pulleys when it comes to fords so i should be able to help