What is the horse power benefits

Thanks for the info. I have been building mopars for close to 50 years mostly RBs and chevys before that. Got hooked on mopar when I bought my 69 road runner have driven nothing else since and all kids drive mopar also. Trained them well!! So I am thinking 360 bored 30 over good heads that breath, purple shaft, AVS on top of a performer intake. Y tube headers 3 inch exhaust. Don't need a fire breather at 73. Just something to put these modern cars in there place once in a while. Thanks again may stroke the 360 not sure yet.