scoop placement

anybody out there have the measurements for installing dual 340 style scoops on a hood without factory holes? how far should the scoops be from the side edge of the hood? how far from the rear edge?

i've come across several "estimations" but would kind of like someone with a set to post the measurments. thanks a ton!

ps. how wide are the stripes on a swinger bumble bee stripe? i think i may paint mine on. i'm new to this forum and don't know of anyone in the northern virginia area to get this info from... any dart fans out there around Fairfax?