WG connection, EM design

[auditude at cox.net]

Hello,

What is the advantage of having the wastegate exhaust source come directly from the
individual cylinders, rather than after they are combined, in this pic:

http://pr0nsessd.dyndns.org/qul_irry/tacq_files/gul20.jpg

This is assuming I am understanding what the plumbing is doing.

In the Maximum Boost book, typically wastegates are connected after the collector, and the
more of a "Y" shaped fork between that turbo and wastegate, the better.

Also, does anyone here know of any U.S. or importable sources for Autoverde (or Auto
Verde?) connecting rods?

Thanks,

Ken