Technical Hemi crossover for blower application (From idea to production)

Well, over 2 years waiting and now giving up.
I buying one of those "hideous" assemblies from Hotheads and removing the colored anodize.
Good luck with your venture.

 

Those have fittings that are NPT on the elbow side. You can replace the AN fittings with hose barbs, and run a traditional hose.

I have taken a die grinder, Roloc disc, and a file to these, followed by bead blasting, to "oldify" them.

By making it look more like a casting, it blends in fairly well.