Sounds like a solid setup. I see no need for the genx heads and intake if your going to boost it, money better spent on suporting mods for turbo. If you have the 799 heads those are the best flowing cathederal port heads from GM. Plenty of guys doing 1k hp on 317s, more or less same head as 243,799 with diff chamber size. Now if your going for every bit of power or money aint a problem then go all out lol.