Direct or specific fit headers a body

Has any one used what they call direct fit headers on a 70 duster? these are headers that are used on low ground clearance cars from what i read.
Hedman headers & patriot has them ,they also call them short headers not shorty.

Do they clear the steering box , starter and frame rail on a manual steering box a body car.

patriot #737-h826-1 jegs

Hedmen thanks