will older slant 6 parts fit new slant 6 parts..?

ok...i found some headman headers off a 65 dodge dart its a slant by the wy and i want to put them on my 69 dode dart...will there be any cleanrence issue there or should i be good...?

If the 65 has power steering, it's possible the front headers might not fit (they actually go between the front and rear mounting points of the K Frame - real sucky design). If the 65 was manual steering, good chance you'll be OK.