Fieroboy; I would call the guy you bought the car from and ask him if he has a build sheet on what motor exactly is in the car. Every little bit of info he has on it, Like what cam lift and all, is there a stall converter what size, stock or other wise.
what size carb intake manifold, what heads and so on. You have to know how much compression, there is a lot of stuff the guys need to know to help you out.
So try to find out then come back and ask for Pat Mccarthy or Techinspector
I'm sure they will help if they have the info on your car. Kurt