you need a low-output, microphonic humbucker. gibson burstbucker II's are as close as you can get, duncan antiquitys and 59's are close but not much. and as it pains me to bust out the old "it's all in the fingers" thing, it doesn't matter what pickups you use, i've played lots of les pauls with the alnico II's and 'they' don't sound like jimmy page. it's him. with the exception of his supro amp's influence, listen to how much he could make a tele (the entire led zep I album) sound like a paul, or how much he could change the sound of his les paul. he also had coil-tapping installed. his clean tone was often the guitar's volume knob turned way down through a heavily distorted tube amp. don't use a distortion pedal.
in case you haven't figured it out by now, i'm saying it's a pain in the ass and you shouldn't bother. just having those pickups may bring you close enough in your own mind but "the jimmy page tone" has a million outdated and expensive-to-reproduce factors in it, to the point where the starting point is $300 in replacement pickups (for 2 burstbucker II's).