I've got N40 listed on my GM documentation for my '69 SS. It says " Hydraulic Steering ".

I checked the option list here on the site, and it says N40 & N41 - Power Steering for both?

Should I have power or manual steering? The car currently has power steering, but the brackets are 1970 and newer style, so it may have been a conversion.

Hydraulic Steering is power steering

N40 - Hydraulic Steering (power steering is the current term)

N41 - Hydraulic Steering variable ratio

Current RPO definition

N40 STEERING POWER, NON-VARIABLE RATIO
N41 STEERING POWER, VARIABLE RATIO
N42 STEERING POWER, VARIABLE EFFORT, ELECTRIC HYDRAULIC

Thanks! graemlins/thumbsup.gif