Ford inj. w/ red tops were 30's I believe and those did come on late 80's early 90's Super Duty trucks with the 460. Other Ford colors include the orange one's which are 19's so don't bother, light blue are 24's also don't bother.
'03-'04 Cobra's have the new thin style blue injectors which are 39#.
'99-'04 Lightning injectors are a lime green color and those are 42's.
I can probably scrounge up a set of Lightning inj. if you're interested Jeremy.