@garaving No problem, I only speak ONE language!
Unfortunately I'm not an 7670e expert. It does not look like there is a BT5 version with S3.
LilyGO is using S3 exclusively now, so I am surprised.
There are so many versions and their website is not clear.
I'm sorry I could not be of more help.
Here is there technical GitHub repository:
https://github.com/Xinyuan-LilyGO/LilyGo-T-PCIE
-Terry