rebuilding Chrysler 400

Alright guys I've decided to rebuild the 400 that's in my 75 Chrysler. I would like to pull some more power out of iti have a couple of grand in mind for a budget. I've heard that the biggest problem is compression. How can I bump up the compression without spending a bunch of money? I'm gonna go mostly stock. Aluminum intake and 4 barrel eddy and new ignition.I also heard that the stock heads flow OK. Gonna have them redone... Just want more compression.
Author: fury1