340 HP exhaust manifolds
lol I guess if I was doing a period correct resto Id spend for them...but if I just wanted Manifolds(becuase A body headers either A:suck or B:are too expensice(TTI) )id skip the HP's cause they really don't do that much more on a mild SB....1-2 HP more than 360 log manifolds...:( Only way id spend big $$ on them is a period correct resto.