340 mopar intake issue

I would drill and tap a hole wherever you feel comfortable having your heater hose ran to and then I would screw in a an aluminum fitting with a backing nut and also with a threaded center hole and then I would tig weld the fitting to the intake for safety measure (mask off the entire intake just to be sure you dont screw up that pretty polish job) and then polish up the welds which wouldnt take but about 15 minutes of elbow grease I would think.

Then you could screw in a heater hose nipple into the threaded center hole.
It would look factory and shouldnt cost anything but a couple beers to get a buddy to weld it up for you (if you do not have the tools to do so) and a bit of time removing the intake to avoid metal shavings from drilling and polishing it up.

The only thing that you may have to have redone is the clear coat.

Or if you want to avoid the welding and possibly a re clear coat job, you could always drill and tap it and use a hardened thread sealer/locker?

up to you....either way its not a hard fix by the looks of it and MAN DOES THAT INTAKE LOOK SWEEEEEEET!!!!