I don't know how accurate they are - but Aguilar do 60s and 70s wind versions of their J pickups and do video demos of them.
They don't do a specific 70s P, but they have a Hot version. The Js have 60s, 70, Hot etc
Worth having a listen on youtube even if the person playing is a bit stinky poo.
I've got a 60s wind P in my PJ-Ray and it's very nice. Not sure that helps you really!