The heads aren't much to write home about, but the new John Kasse Cobra Jet heads in the SVT catalog would certainly wake up the horse!!!! I used to run a 460 stroker motor with the old Alan Root CJ aluminum heads, very strong motor. I have a couple 460's around now, waiting for the next project that needs one. The 429 motor RPM's a bit quicker than the 460's but are down on the torque numbers.