360 Magnum building on an existing bottom end

360 Magnum building on an existing bottom end

Since it is a magnum engine I want to keep it roller, so this is the cam I was thinking of COMP Cams 20-814-9 - COMP Cams Xtreme Energy Retrofit Camshafts Advertised Duration 292/300, Lift .549/.544. Its a little bit bigger, but go big or go home LOL. It will probably get me in the 500+ HP range where I want to be. I was thinking of trick flow 190 heads, but they don't make them with the pedestal for the magnum rockers. In which case I would have to switch to shaft rockers. But I like the new magnum style pedestal rockers and the reason I chose a magnum engine for my build. So if you have any suggestions for high performance heads for my build please let me know, I would appreciate and will investigate all suggestions.