speed pro recommendations are .006" per inch of bore (.024" for a 4.03" bore) for supercharged applications and .007" (.028" for a 4.03" bore) per inch of bore for nitrous applications.

they normally are using wider second ring gaps to bleed off pressure to keep from unseating the top ring but in this case they're listing the top and second the same. either way they're using wider second gaps these days as opposed to tighter which was practice for many years.

remember when it comes to ring gap too much is better than too little, butt the ring ends and bad things happen