i wouldn't take the neck off of that and sell it, that uses a TOM or Tune or Matic bridge which has a diferent fretbaord radius than a normal jaguar.
a normal jaguar is 7.25, the classic player series is 9.5, and the "HH" series is a compound radius.
anywho.
the body would still need to be routed out.
the rhythm section for the jaguar and the jazzmaster are the same.
the bridge assemble for the jaguar and the jazzmaster are the same.
please. buy a jaguar, and have a tech route out the body for jazzmaster pickups and route the guard for jazzmaster pickups. i see you are over seas, i may be able to direct you to someone who can do the work for you at a reasonable price.