Manual 4 wheel drum to power drum

I bought a 1968 Dart GT (360 motor) with 4 wheel drum (all new brake parts including master cyl). I'd like to have power brakes. Can i simply add a booster or do i need to replace more than that?

Here's one I found with the 4 bolt pattern.


Mopar 4 bolt power brake booster charger challenger dart demon duster w bracket | eBay