Putting together a 410 with 2 7/16 Hilborn Inj. using only down nozzles, -10 heads & fresh Waterman 450 pump. I'm trying to figure out nozzle size. I'll use Hilborn numbers for easy reference, I've been told anything from 14-18. I realize that you can push the same amount of fuel through a smaller nozzle and achieve better atomization (within reason) while taxing your fuel pump more. A Hilborn 14 is equivalent to a Kinsler 560. 16 is equivalent to a 620. I'm leaning toward a 16AS just thought I'd ask here before pulling the trigger. Thanks.