standard steering, LO1, Part no. 111 460 44 01, total ratio i= 22.8
power steering,LS75, Part no. 111 460 46 01, total ratio i= 17.2
power steering for 230/8 and 250/8 (W114),LS75, 114 460 11 01, i= 15.66 (don't know if fits 280 SL)
for W114, 2nd version LS90, 114 460 18 01, i= 15.73
(Tabellenbuch PKW 1969/1971)
Klaus
1969 280 SL