Edelbrock 1405 needle and seat

jets and rods determine fuel enrichment through the RPM's, needle and seat only fill the carb, like a ball **** in a toilet. If your running boost, you should run the largest needle seats you can. If you have a spare pair of rods, you can start filing them (keep bottom the same) and trying them. A little goes a long way. Also with jets, if you go bigger, the entire range gets richer.