Power steering box recommendations for road race

I'd just find a Mopar Saginaw pump for it. That way you don't have to worry about brackets, special hoses, etc. The Saginaw by itself will lower the pressure a little. That and an increase in caster and I would be inclined to see how it went before I started reducing pressures further. Although with the Saginaw that would be easy enough to do per the article.