What to do with those pesky coils in such a confined space? In addition to PROFORM's LS Slant-Edge valve covers, PROFORM has designed an attractive way to lift your coils off your valve cover so you can see the Chevrolet emblem. a unique rail mounting system attaches to the threaded holes on the valve cover, and the individual coils attach to the rail so they can be mounted in multiple positions. All necessary hardware included. PROFORM coil brackets are not compatible with AC Delco coil #'s D585 and D581. These coil brackets will accommodate the equivalent MSD coils. Note: Stock spark plug wires are not long enough to work with this coil bracket. MSD's 13" spark plug wires, part no. 39849 are recommended. 13-15" wires are needed if making your own wires.