Not sure if this was mentioned, but there is a DIY U87 at GroupDIY. The mic body is ShuiYang SYT-8 (if I recall correctly) from "chunger" (US$189) the pcb's from "poctop" about US$30 or so, and you need to buy a dual backplate K-87 capsule clone (RK-87) (microphone-parts.com) I think is the website and I think it is about US$110, then of course the parts. There are several transformer options depending on how much you want to spend, I think between about US$45 to about US$100 if I remember. So US$500-$1000sh depending. poctop also has tapered boards if you want to use a smaller MXL taper type body.