Matto
Q1.) No. You'll need a ground at the sub. You'll have to run a 4 wire feeder from the main panel.

Q2.) No. You'll need to run a 4 wire feeder from the main panel. The equipment ground needs to be in the same cable as the feeder.

Q3.) You'll need both an insulated neutral bar and a ground bar, with the respective conductors connected to each