My car was a column shift too. It also had a B&M shifter, LOL which I also hated! It was the first thing to go! No you don't need a different hump, only manual tranny's need the hump. You do need the brackets that weld on the floor for the shifter and the console.
I converted mine over to a stock slap stick shifter. I then bought a pistol grip shifter handle from member "Quapman" ( Steve) I love this set up! The brackets are available new , but you can often find them used as a 4 speed conversions are popular. My suggestion....use the shifter you have now and gather parts when you find them. There are always all the parts you will need on e-bay. But I'd start with a post in the parts wanted section? You won't regret going to the stock set up!