I'm thinking something along these lines would work ?
Should be easy enough to make a couple of aluminum bungs and have
them welded to the tube. I don't have a lot of clearance on the intake
ducting, so I would have to check that there is enough room for the longer
mounting detail. Right angle fittings should work.
EDIT: Due to the amount of messing around involved in mounting the
nozzles in-line, I am thinking that I will just put them at 45 deg as shown
in the revised sketch. Since 99% of people mount them straight in the
side of a duct and it works, mounting in the corner should also work.
Also means I can use standard nozzles with a button welded on the tube
and tapped M8.
Cheers... jondee86