SP radiator

[ajgibb2002]

Hello all,
I have a relatively small leak in the radiator and have to deal with
it before hot weather and hills
-- Is there anyone on the forum with first hand experience doing a
radiator R & R on an SP?
-- Are there any special "gotchas" in the job?
-- Is there anything special about the standard SP radiator that an
ordinary truck radiator place would have problems with in terms of
repaid/rebuild?
-- Has anyone substituted a new "5 tube" for the old "3 tube" on an SP?
-- Are the "5 tube" units easily available? Where?
Thanks much
Austin