go with the Comp Cams Xtreme energy XE262H Its 218/224 dur at .050 and 462/469 lift and 110 lobe sep . I think this is also the cam the guy used in that you tube 305 . Do a little porting to your 305 heads . This is the biggest cam you should run in your 305 . It will give you max HP and not kill your torque . And you can go down to a 2800 stall and run a 355 gear . COOL