1.  The outlet has been removed, and replaced with a 2.5" OD aluminum pipe, which was welded in.

The outlet has been bead rolled.  There is enough room to connect a standard 2.5" silicone hose and clamp.

2.  At the rear of the outlet manifold, an additional piece was welded on, to mount a bypass valve.  Bypass valves of this

type are hard to come by, however by using a simple adapter plate a Mini Cooper bypass valve could be used, or this could be 

blocked off.  In addition, there is a 1/16 NPT hole in the side of this block, which can be used for a pressure gauge.

The part is in very good condition overall.