Im changing the wires because the ones I have are the original's (I have my SUV from brand new since early 2006). Now Im having some problem with wire #2 giving me "Check Engine" light on and intermittent at high revolutions, with random cylinder spark error (power loss). Im planning to replace all the set for a brand aftermarket new. Im live in Mexico, here the ACDelco 746TT (The one that replace the original GM part) are very expensive and I have a dealer with lot's of MSD's original products of 8.5mm at good price, but don't know the length of each wire to buy them fixed for my Torrent.