I'm fairly certain that's what I replaced :lol:
That's the "standard" Gibson humbuckers nowadays isn't it? They'd have come in a Faded SG Special? If so, I replaced them with Riff Raffs.
To be fair to the Gibson pickups, I actually sought out the specific guitar and bought it for Riff Raffs I already had in another guitar. The Gibson pickups seemed ok to me, I liked the noises the guitar made through an amp both in the shop and at home. But they were only in for a couple of days. I did adjust their heights to see what they would do under different circumstances etc - but I didn't put a lot of effort into getting them to the best they could manage for me.
After I swapped, the basic tone with Riff Raffs was pretty much the same as far as I can remember. They didn't change the guitar enormously, seemed to be in the same ballpark, which was fine by me. But the playing experience is nicer - BKPs feel more expressive, and they seem to reward the effort you put in with you fingers. And if you feel better, you play better and sound better! :D