Read a great review which suggested installing the Buzz Stop before changing out your Jaguar bridge.
Sound advice. I bought a Squier Vintage Modified Jaguar, and despite a thorough set up and shielding, I couldn't get rid of the awful buzzing sound. Installed the Buzz Stop...it plays like a new guitar! Sounds like a Jaguar, yet the cleanest Jaguar I've ever played. There may be a little less treble, but it can still surf, the tone is beautiful and NO buzzing. I'll never own a Jaguar without one.