Engine swap idea

Yes I’ve heard there are possible height issues although I’ve also read they’re the same height as the Hemi 6 so I guess I’ll just have to get my tape measure out.
From what I was reading there might be a centre sump from an AMC that will fit, again more research is needed.
The transmission is the same as the one used in a lot of Toyota’s and Lexus’ just with a different bell housing. Can you tell me more about the T-bar crossmember?
If they're the same height as the hemi 6 you've got it made in that regard. No hemi 6s here in Wisconsin that I can compare to for ya.
The transmission (around here, anyway) is the Borg Warner AW4 and/or versions of the Chrysler A904/A500 depending on year and t-case... no idea about the Toyota/Lexus setup you're referring to, could be Oz only or such, can't help you there.
Lots of threads on here about the crossmember mods needed for the Chrysler-based overdrive trannies- if using something else, you're back to your tape measure and a best guess! Good luck!