Sounds like a most excellent upgrade - try The Creamery custom pickups.
Vintage, Modern & Custom Replacement Wide Range / Tele / Thinline Fender® Humbucker Pickups & Upgrades from The Creamery, Manchester, UKwww.creamery-pickups.co.uk
scroll down a bit - they have a WRHB in a standard HB / 'PAF' size
I actually just bought one for the neck position in a 94 MIMFender has a re-issue of the CuNiFe WRHB with the CuNiFe magnets.
Sweetwater has them. They will have a Fender logo if that's of any importance to you.
No affiliation with Sweetwater here.