Highest flowing sbm heads?

hellcats weight like 4500lbs don't they?

the original context of the genIII hemi was making roughly 600hp in regard to ease and expense. i think it'd be a better comparison to take some LA motor and some genIII hemi and use them in the same chassis. power is power, i think 318willrun made a good point. strong block, good heads, availability. at some point it does make sense to consider the genIII. maybe not if you already have a ton of LA motor parts, but if someone was starting from close to scratch and spending 10-15k on an LA motor is in the near future...