DrkAnglGT

I have MSD 8.5 Super Conductors on my 97 GT. What would be the best plugs for her?

Chopper

I like to use a double platinum plug.But other people swear by Autolite coppers.Stay away from the weirdo 2 and 4 electrode plugs.Splitfires did absolutely nothing for my H-D,(dyno numbers don't lie).Here's a tip,take a file and round the sharp corners off the side electrode,not a lot and don't alter the firing surface,just take the sharp edge off.It keeps hot spots from causing detonation.The reason the factories don't do this is it would just be another step in the manufacturing process.Economics.Also it wont hurt to make sure all the gaps are the same,within .001-.002.