@Burning oil: I had a thought on an adapter piece that would replace the middle section of the intake manifold that is fed boosted air from turbo.
View attachment 48084 Make a metal piece that a hose can go on, Like a tee with the hose barb facing rear. Then the hose that feeds from turbo to intake would just be longer for the one using the other style. Sorry, running on no sleep
today so not sure if that made sense.
Idk if bolt pattern and spacing is same between different styles of the turbo Hummers.
For n/a Hummers they use a truck lower intake, so it could go to that with a flat plate and a 90* pipe coming out of it facing rear. Keeping that low profile as possible, because multiple people said required body lift is why they never added a turbo in the first place.