This Mopar Performance logic module fits the following vehicles and requires no other modifications:
 
1986 Shelby GLHS (Omni)
1987 Shelby Charger GLHS

Mopar advertised back in the 80's and 90's when these used to be available from the dealers that this module provides an increase from 175-200hp and an increase of approx 25 foot pounds of torque.  It also provides a nice improvement in part throttle response as well as an increased amount of time before overboost shutoff kicks in.   These are great little modules and increasingly difficult to find in good condition these days.