New MSD ignition control box.  This is the popular 6AL series, which has the built in rev limiter.  The box basically changes the output voltage on your ignition coil to create more spark.  This is very noticable at higher engine RPMS and also at idle.  You essentially get more spark to your spark plugs.  The rev limiter will drop power to your ignition coil to keep the engine RPM below the limit you set.  Excellent for the daily driver, and street racer. This will work on HEI ignitions as well as the 92-97 LT1 series engines.  Detailed instructions are included.  This unit comes with the wiring that plugs into the box.  We are an authorized MSD distributor, and registering your product with MSD carries a full warranty, covered directly by MSD!

Some HEI distributors will require removing the ignition module from the distributor.

We use these on a regular basis on the following vehicles:

Firebird/Trans Am w/ Olds 403, Pontiac 301-455 engines
Camaro/Trans Am/Corvette w/ Chevy 305-454 engines, 92-97 LT1 engines