IMO yes run em on everything I can I just like them.
but for $200-250 that's alot.
ebay has some cheapies and so does jegs and summit.
I would definately do long tubes if you are going with duals, they are supposed to be better for low end torque anyways.
the black ones rust quick but they don't rust thru, not in say 5 years or so, at least I never had any that did. I've had them black ones for over 10 years and they rust but still work fine.
if you can or your wallet can afford it maybe get some ceramic coated, on find stainless.
I got ebay stainless shorties on my 88 tbi, only because I didn't want to do full exhaust, it was already setup for duals on the manifolds.
They used to have 73-87 long tubes in stainless on ebay for like $160 but I haven't seen them in awhile now.
Now if you do run em here's some tips and tricks...
use manifold gaskets, the alum type up top, and then down low if you don't get the ball style then buy the summit header buddies, lmc has some now too, they are ball end so they use NO gasket on bottom. No gasket means no leaks.