['68OrangeSunshine]

Yeah, the Large diameter helps leverage immensely when using Armstrong Steering.
67-68 wheels are 16 or 16-1/2''. 69-72 wheels are 17''.

I tried to put P/S on my '67 K/10 Suburban. Four wheel drive and a 454 BBC in front it was a beast to steer manually. But I screwed up and used a C/10 69-Later style P/S gear box. Steering geometry was all off, and it was shearing off 1/2'' grade 8 bolts from the frame. Couldn't pull a U-Turn from the Left Lane. So I tried to restore the manual box. Put a bead of JB Weld on the long crack over the case and hoped for the best.
I never could get it back to the way it was.
I got 1/2'' ID foam pipe insulation [''Donkey D!ck''] and put it over the 3 spokes and around the rim, and taped it over with black adhesive tape. The foam padding helped when catching the spokes as the wheel spun back -- straightening out from a turn. Kept from bruising my hands.
Someday when I rebuild that Sub, I'll put a post-MY '71 Dana 44 front end on -- w/ P/S and Power Disc Brakes. Two cures in one shot.
But working on the '67 Suburban isn't in the current budget.