Experts please chime in here,

I bought myself a t56 magnum from RPM transmissions along with a quicktime bellhousing for my gto. I am currently in the process of checking for the alighnment of the bellhousing to the crank. Does anyone know where i can find a writeup on this? Also i need suggestions on a magnetic base to use. Locally I can only get a hold of Pittsburgh magnetic bases and they are just to big to be able to fit with the dial indicator through the front plate of the t56.