any help on ID of this shift lever

are all these reverse threaded?

No. RH thread.
Loosen the lock nut under the knob first. Then unscrew the knob.
It should come off pretty easily. If it doesn't, it may be "glued" in place.

If you aren't saving the knob, use whatever tool you have to unscrew it, pipe wrench, channel locks.
You may have to chase the threads on the lever.
3/8"-16 or 3/8"-24 whatever matches the thread.