[snake farmer]

Compression is an issue to consider. Heat range etc. I'm running 11.7 to 1. alum heads. I run Autolite Racing series plugs. AR33. This is a replacement for the BF33. BF 33 plugs are worth alot of money now as a NOS plug. I've heard that Dove heads have been built over the years with 2 different size seat diameters (Hole size is what I'm trying to spit out) also some had tapered seats others had conventional seats. If you are running Ford heads, the AR 33 will work fine for starters. Any doubts, e-mail Geo Anderson @ Gessford Machine link on this site.