Change the plugs after you beat on it for a while.
Autolite's are great plugs...to hell with NGK's...copper plugs FTMFW...as for the Seafoaming...yes...OPEN AREA for sure. Where are you planning on running it into? I'd put that stuff in every opening possible...gas tank, vacuum lines, TB, oil...
i think im just gunna do 1/2 in the brake booster and the other 1/2 in the oil. how does that sound?