I'm interested in modding an MCA SP-1 with one of Microphone Parts' U87-style capsules, but the price on their PCB replacement kit - $130 for the MP-V57 boards (plus components) - seems pretty steep for what it is. Does anyone have a copy of the schematic so I can translate it to vero or perf (or Eagle)? Or have perspective on the MP-V57's original circuit inspiration? Also: How far into MP's vaunted "Neumann-esque" territory would I get by just swapping caps/doing common mods? I don't necessarily need to turn this mic into a multi-pattern thing, as my main aim is to improve my vocals/guitars/room mic arsenal; I just want to get into "high end" cardioid LDC territory and complement the capsule with an appropriate circuit and electronics.