how to achieve 600 to 650 hp sb 408?

thanks for all the answers. 7172 duster your engine seems strong the power looks to raise fast on the top end must be a real kick. i have ordered a comp cams rx302s-r6 with valve lift 654/655 and 269/276 0,50 duration 106 lobe center but i have 1,6 rockers so the lift is going to be 697/698 i have also sold my old headers and ordered 1 7/8 headers and i am going raise the compression to around 12.1 i hope the combination going to work