Help ID'ing Lee PS box??!!

[Nicks67GTO]

I found a Lee MFG steering box for sale used. Its advertised as

"Lee 12:1 GM Steering Box SB12-1
235 valve (medium)

Steering box is a GM Style Front Mount

the lower the valve #, the softer the steering feel"

Is this the box that all you guys run on your GM A body cars? Its for sale for 250 bucks and has a 7 days satisfaction guarantee on it.

[Red SS]

I have the 12.7:1 box in my 64 Chevelle convt. & I love it. I bought the whole kit but the box was $545. If you phone Lee Mfg (818 768 0371) they will tell you what you need to know. When I called the big guy answered the phone! Nice folks.