I have standard 2wd rears on mine with grooved discs, but I also have 4wd calipers off my old saff so am contemplating which to use, I will go uprated pads in whichever I choose anyways.
I’m thinking staying 2wd as 1) I already have grooved/decent discs and 2) they weigh less, I know that sounds a little gay but my car will be going on a diet once going back together.
I also don’t think I’ll ever cook them as I won’t be doing any track days or super hard braking use (and it is the rear, the fronts are going bigger)

Cheers Paul