Slant Six Racing Manual?
In Australia we had the 225 in two barrel form producing 160 HP and in the last slant six in 1969 we had a high performace option with different cam and other things and produced over 175HP. We then abandoned the slant six in favour of our new HEMI six and that produced 302 HP in factory tune and probably another 25 HP with factory Bathurst option cam. Yes it did have triple weber carbs and a lot of internal mods.