it's the red box thing that lets you use a DIS-2 ignition with distributorless 4 bangers.i bought it brand new from Summit for $49.88. never installed it. MSD part number 8912.http://store.summitracing.com/partdetail.asp?part=MSD%2D8912$45 shipped is what i'm hoping to get for it.
2016 WRX STi Limited (current)2001 A4 1.8tqms (donated)1991 GVR4 #1933 (sold)old.dsmregistry.com/detail.php?carid=218 (dismantled)
sold, email me james@antsmarching.org