MSD LS Ignition Control - Black 820995 an installation kit must be

an installation kit must be purchased separately

1979-1987 GMC G1500

internal Balance

Brodix PB 2005 Heads

1987-1990 Mercury Colony Park

MSD LS Ignition Control - Black 820995 an installation kit must beAs the popularity of GM LS engines continue to grow, so does the demand for a powerful, reliable and easily adaptable ignition system. MSD has answered this demand with an updated and improved version of the popular 6LS box. Whether using a stock crate engine or building a custom powerhouse, the MSD LS Ignition provides the control you need to achieve the performance you want. Dial in the perfect tune for your LS using the easily adjustable preset