Wow is all I can say. Lots of non-research here.
I would sequentially twin turbo a car before I ever twin charged with an M90, but that's just me.
As far as the argument of twin charging being better than a single turbo.... It's so relative its ridiculous to ever ponder without citing specific build sheets with track times to back them up.
There is a reason most people have NOT done twin charged cars. I am actually surprised that Darkhorizon hasn't added his 2 cents yet. lol
TVS1320+ twin charged?!
OP here is link you will find useful-
http://bit.ly/TxtAbO