I would almost think that even the single pot rear calipers would be too much.
I'm not a big drifter so I don't know.
I wouldn't think that it would take a whole lot of stopping power to throw the balance off to initiate the drift.
Either way, a bolt up plate to give dual calipers is pretty hot.

Imagine that set up for front brakes. Dual 4 pots!. stop so hard your tear the pavement.