It's like they all get Second Hand high through the screen when watching Uncle phonies garage. The Magnum heads are nothing to write home about pretty pathetic as a matter of fact that people get a hard-on for them. The best heads far as I know they quit making. Which leaves you with doing a lot of work on some aftermarket Ironhead if you're trying to maintain the Magnum is great **** because as soon as you switch to aluminum... it could be any engine non Magnum, wouldnt matter. 360 is a 360 ..just put some 9.1 pistons in it already.