Does Vetterman use AircraftExhaust's mufflers?

[GSchuld]

Sorry for the dumb question.

The mufflers that Aircraft Exhaust sells for their 320/360 systems appear to be identical to the mufflers that Vetterman uses on his systems.

http://www.aircraftexhaust.net/murph...l_exhaust.html

http://www.vettermanexhaust.com/

On the aircraft exhaust site they state that the RV-10 system was a collaboration between them and Vetterman, furthering my assumptions.

So, is it safe to assume that Vetterman buys his mufflers from Aircraft Exhaust?

George