Taylor 8mm Spiro Pro Ignition Wire Set Features: Available For Street Or Track Applications Spiro-Wound With Stainless Steel Wire Covered With A Conductive Fluorocarbon Material Provides More Fire Power To the Spark Plugs OEM Resistor Core Wires Eliminates Radio Frequency Interference Two Layers Of 100 percent Pure Silicone Height: 10.00 Width: 11.50 Length: 3.00 Weight: 1.60 lbs Fitment: 1978/GMC/K15 Suburban/Sierra Grande Sport Utility 4-Door/6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated::N/A^^1978/GMC/K15 Suburban/Sierra Classic Sport Utility 4-Door/6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated::N/A^^1978/GMC/K15 Suburban/High Sierra Sport Utility 4-Door/6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated::N/A^^1978/GMC/K15 Suburban/Base Sport Utility 4-Door/6.6L 400Cu. In. V8 GAS OHV Naturally Aspirated::N/A^^1978/GMC/C25 Suburban/Sier...