[P.J.]

A friend of mine whom recently bought an ls6 70 chevelle Teder sent me this information
Suprss70
Did a search on chevelles.com and came up with the following

"1968-1969 (4-speed manual)

The M21 and M22 shifters used part number 3922523; and both transmissions with bucket seats used part number 3922524. The lever with bench seats was angled back more for better grip. Knobs were of a two-piece design; the lower half was part number 3920217, and the top half was part number 3920216. The top half was black plastic with the shift pattern engraved in white. When the console, D55, was ordered, lever part number 3922524 was used with a solid chrome knob having no shift pattern. The shift lever should also be cast with the name Muncie in it. The Hurst shifter so commonly seen was never originally installed in the Chevelle as it was on the GTO and 442's.

1970-1972 (4-speed manual)

Levers were the same in 1970, 1971, and 1972; cars without bucket seats used part number 3973865, and cars with bucket seats used part number 3973866 in 1971 and 1972, except the SS 350, which used part number 3973867. The 1970 and early 1971 models used part number 3973865, except the SS 350 in 1971. Knobs in 1970 were the same as in 1969, including part numbers. In 1971 one-piece black ball knobs, part number 3992307, with an engraved shift pattern in white were used. When the console was ordered, part number 3992308 was used. Both knobs came with a spacer nut between the knob and the shifter.

....per Chevelle SS Restoration Guide."

"A restoration book I have lists the following:

70-72 without bucket seats 3973865
70-72 with bucket seats 3973864

71-72 with console 3973866
71-72 SS 350 only 3973867
70 & early 71 3973865"