gibson sg pickup

What should I expect from my Gibson SG pills?
I have a Gibson SG Special faded. Right now, stocks are micro 490Ts and 490R Humbuckers. I want to do better than give me more of a rock / heavy metal. I heard of P-90 soapbar pickups. Now I'm wondering if it would fit in my SG without the route. Also I thought to obtain or BurstBuckers EMG 81/85. What are the better. Suggestions? Thank you.
EMG! haha theyre better.
My Gibson SG Standard with Angus Young Sig Pickup in the bri