I have a 63 300 J. The original plug wires for these were pretty much "brown" similar to the Max Wedge cars. Not orange like seems to be the common option. Wires on her have to be 40 plus years old! (as a guess) and orange. Any ideas on where I can find the "brown-ish" wire in bulk as the 426 Max wedge ones are quite different length wise/ routing wise? Don't think 8mm wires will fit in the stock cap coil.
