A good replacement for P-90 in single coil size, Easy install without open more slot to have hum-cancelling pickups, better tone and more punch. The pickups want to go into overdrive after a certain volume. The best way to judge a pickup is to listen it and let your ears tell you what sounds the best.

Features:
-Made of metal and ABS, ceramic magnet, durable to use.
-Triple wax dipped and vacuum sealed to eliminate any unwanted feedback and noise.
-It use shielded wire instead of the flimsy two-part wire, safe wiring with good noise protection.
Type: Single Coil
Position: Bridge, Neck
Each pickups size(LxW): 84*34mm / 3.31*1.34in
Color: Black
Resistance: Neck 8.22k, Bridge 9.57k
Weight: 189g/6.67 ounces

Package Included:
1 x Neck Pickup
1 x Bridge Pickup
4 x Screws
4 x Springs

Tips:
Is there any way to mount these in a guitar that was routed for a humbucker size?
Yes. You need to install these pickups on a solid maple body that came with humbuckers. And you may file the openings to allow the p-90s to drop in the cavities. To mount the pickups, then you can add springs to the mounting screws below the pickups. This allowed for adjustments for height.