I've been wanting to get some headers for my '73 318 Dart aswell for some time but never got the guts to break out the wallet and end up paying for 1 or 2 days of misery trying to install them.
I already get claustrofobic when I look into the Dart's enginebay...

Fortunatly a set of shorty headers came up for sale recently which I snatched up along with a 4bbl intake.
By eyeballing the enginebay and the shorties I think I have a much easier time installing these then a set of full length headers.