I got a response from American Coach this morning.
So even though Gillig says this.
American Coach says.
That system is not a Fleetwood system. The chassis manufacturer provided all the suspension pieces and parts. The emergency air inlet is always located in the Front roadside bay. That comes with the chassis and we mount it there on all coaches thru 2015.
I understand Gillig said itís Fleetwood that but it is not a correct statement. Fleetwood does not install anything in the air tanks.
Iím sorry but I have no information on any of the items you are working on. I wish I did but that one is all chassis.