Performance Tune-Up Kits everything you need to "wake up" your stock HEI Distributor. Kits Include street-strip 4-pin module and Coil combination, premium rotor and cap, custom Flame-Thrower Coil cover, Adjustable Vacuum Advance canister, hi-Performance advance kit, Wire Harness and Capacitor, and complete installation hardware. "Race Only" Tune-Up Kits bring hei equipped circle track or drag Race engines back to life. These Kits Include matching Coil and module, wiring harness, Vacuum lock out, advance weights, springs, bushings, cap, rotor, dust shield, and necessary hardware.