Yeah my truck had a resistor on it that I installed to slow the burning up of the points. It stopped firing altogether last night and I had to be towed home so I got fed up with it and I put an HEI distributor in it today with a new cap, rotor and plug wires. Its running great so far, but my tach is acting funny. I havent tried to fix it yet but if anybody knows whats wrong with it it would probly help me fix it quicker. It reads pretty close at idle, but it reads very high while driving. It reads at about 4 or 5 thousand when its only running at about 3 thousand.