$OLD...Thanks Jarold! No trades, thanks. Ilitch Cavity Noise Canceling Systems for Les Paul (CVNCS-R2) — Rhombic Shaped Cover. For P90 Steel screw poles pickups, 7-9Kohm resistance. The Ilitch Noise Cancelling System was installed with a pair of Gibson P90s, 8.04K and 8.15K, making it possible to play in bars with bad wiring and neon signs. In my experience, there was significant noise reduction. Also played in those same bars with a Wolfetone Meaner P90, 9.5K, with the Ilitch Noise Cancelling System. Again, a significant noise reduction. So you guys with P90s wound hotter than 9K, the Ilitch Noise Cancelling System does help keep the noise the noise down. LP style guitars that have a back control cavity and one or two single coil pickups can be retrofitted with a CVNCS-R2. Ilitch recommends all single coil pickups be the same polarity, same winding direction. i.e. no RWRP. If the pickups are RWRP, you just won't get the noise cancelling for the middle position. The CVNCS-R2 replaces the control cavity cover and has been designed to fit the original hole pattern, making it 100% non invasive. Ilitch says designed for P90 or similar style of pickups which read between 7.0K and 9K resistance...and the Ilitch device still reduces noise with hotter pickups.