I would get in touch with Jack at http://home.pacbell.net/jmcclure/, Tom at http://www.tompappracing.com/ or Duane at www.hi-techperformance.com. I guarantee you one of those guys can help you. If the Barracuda rebuild kits are the same as a Berk/Dom/AT it will probably cost around $250-400.00 for the parts depending on where you get it.
If you really want it done right give Gary a shout at www.performancemarine.cc. He is in Texas but you can ship your pump to him and he can fix it up right for ya.