I had suspected the fragility of the torque sensor and removed it for safety before I welded.
I had thought about using an epoxy instead. The one that is used now in body repair shops for bonding replacement body panels but did the welding instead.
The cautions that you warn of are well founded. This can be an issue of techniques and recognizing in advance that it is a significant consideration of avoiding being the bull in a china shop.
I think it is also important that you recognize the combination of the amount of boost that the Yaris unit provides is well matched and in addition the GPS EPS adapter to the boost reduction curve is very well applied for the Pantera along with it's built in 'fail safe' operations if the GPS connection fails for any reason.
In my own personal review to myself, I don't see the need for a more powerful EPS unit and see no need to look for another type of boost controller device, but frankly I only intended to do this for myself and not offer other advice to others on how to do it. Many just don't like my personal solutions and that's ok with me. Let them realize themselves that they should have taken different paths? I am not the Dalai lama of Panteras by any means.
This is really a great build and in no way, a "Mickey Mouse" solution.
Great job on your part and an excellent post-surgery review of the results. Not that you or anyone else needs my approval? 