400 4 barrel swap

I recently picked up a 78 power wagon 200 with the 400 2 barrel set-up. I picked a carter thermo-quad and 4 barrel intake from a 440. I was wondering if swapping out intakes was possible since they are both RB. Any info on whether or not this is possible would be nice along with pros and cons. Also this is my first thermo-quad so any tips on tune up what too look for problem wise would also be greatly appreciated. Thanks in advance.