There are plenty of guys on here running stocker / 475 in the 650-700 hp range on stock injectors & stock cp3's. that is more than a stock lb7 or lily can handle for an extended period of time per say. If you are looking to go bigger than most likely you will need to go t 4 pedestal & install kit which will leave the options open to go large on the valley charger & team it up with a good sized charger. It all depends on the goals you are provisioning for.......