Here is few thoughts for you,
What would be better and more reliable:
- Toyota Factory creation, where are 1000 of people researching developing, testing, blowing HUGE $ on experiments, manufacturing, testing they products in the whole world?
- OR just Some info from few peeps in whole world who did all the stuff by them self in a garage, using Internet for research (not a lab

), used they own tools, experimented the best way as they could (....hmm lets put this here and see what happends......

) and still having some issues about the job they done???
As your self a question - you need to drive your car, or Always fix it?
You find the answer at this pretty quick - so go with the 3S swap, witch now has MORE info, MORE people to help you, MORE resurces on fixing / parts then anything else for 6Gen. It was hard to swap 3 years back - now the road is clear.....