This strat was buyed by me in 1972.
In 1975,the holes of the neck and bridge pickups were enlarged to put a dimarzio humbucker in the neck position and a seymour duncan humbucker in the bridge position. The middle pickup remained without any change.
I kept the original strat neck pickup,the fender bridge pickup was lost.
One year ago, in 2018,I buyed a new strat pickguard and a new 1969 fender custom shop bridge pickup.The original strat neck pickup was replaced.