Who's running NGK ZFR5N in there Slant?

I literally just installed NGK ZFR5N (#3459) a few days ago. As mentioned, they are extended tip and get the spark closer to the center of the chamber, which is desirable. I also have the HEI conversion, so I gapped them a bit higher in the 0.036-38" range (and you can certainly go higher). Runs great! Note that they are 5/8" plugs instead of the stock 13/16". Also, for the pre-'75 heads they are not tapered and you want to remove the crush ring as well. The plug tubes act as the spacer between the plug and head.

FYI - these plugs are the latest Dan Stern recommendation (he's tried a lot of them).