There have been some under skirt shorts comparing the LX to the GX. There is a huge difference in the exhaust size. That was the first thing I noticed. That's probably their biggest challenge but it is the same Chassis so one would think it would be easy to swap them out. My F-150 exhaust is huge, there is no way they could push that much air through this motor no mater what you do, unless you want some very low hanging pipes. The upside is they look to be running them below everything so it is possible.Funny as I have a YotaWerx tune for my 2UZ-FE and a VF Tuner sitting here at my desk for my 2UZ-FE. I'm counteracting my previous posts, but if it takes the reliability down from 500,000 miles to 400,000 miles that is fine as my GX will rust out before that.
If the 3.5TT is like Toyota's other motors it will be choked by a crazy-restrictive exhaust system that can be fixed without tuning it. Hopefully the 3.5TTV6 will actually be tunable, compared to my UZ 's ECU which took aftermarket tuners 15 years to finally crack.
I hope they bring the hybrid to the V6 and the GX. De-tuned or not, it would be a fun setup to drive. Lx700 is showing 500hp and 600lb-ft. De tuned that would take it about where my Limited is.