My tranny is starting to slip and takes forever to shift. I am looking at getting a suncoast torque converter , suncoast intermediate rebuild kit and suncoast valve body. I don't really have the money for new billet shafts so can i use my stock shafts that are in my tranny now?

 

You should be fine as long as you don't shift with the converter locked. I'm still running stock shafts in my trans, for now anyway.