I have a chance to pick up a 284 484 purple shaft for little or nothing and was wondering what your opinions were on this cam? I would be putting it in a 72 Rrunner, 440, stock with a performer rpm, 750 vac sec holley,headers, auto, 323 rear gear. Will it work and if not what would I need to change? I know there are better cams out there, but like I said this one is easily available. Thanks for any advice!