I am getting ready to buy sfc's and a stb for my car. I need to know which, if any, sfc's will clear my edelbrock headers and y-pipe. I also want to know if the edelbrock stb is a good choice.

You should have no problems with the SFC's unless you've got a 4" exhaust or dual Cats. A little shifting of the pipes might be necessary but its normal. I hear the Edelbrock STB is a decent choice, 3 point right?

Yes, the stb is 3 pt. It is used and has all the hardware.