I have a set of the JBA shorty headers on my 1993 K1500. Super high quality IMO with nice thick steel on both flanges. Exit point was a little bit off to connect to stock “Y” pipe so I bought the JBA “Y” pipe from either Summit or Jews (can’t remember which?).
Very nice “Y” pipe that flows great (in place of the factory which is more like a “T” pipe LOL) and everything ends up exactly where it should both at collectors and the cat.
I would highly recommend using this set up, although long tubes ARE typically a higher HP gain.