I'd second this advice. I recently acquired a secondhand PB-50 for £50 and have reshaped the headstock & applied a new decal, made a loom with CTS pots, puretone socket & orange drop capacitor, fitted super-knurly domed knobs, squier tuners, a Fender HiMass Bridge, chrome pickup cover, and a well worn-in set of thomastik flats. I'm so knocked out by the tone with the stock Roswell pickup that there's no way I'd consider changing it - it punches well above its weight.