The m-audio Nova is one of my favorite donor body mics. It’s seriously heavy and solid with a very professional look and very low-resonance body.
The internals of the Nova are very similar to the Sterling ST55 (but without the pad and filter switches). We replace the over-bright stock capsule with either a K47-style or CK12-style capsule. The cheap stock transformer is replaced with a high quality choice from 3U audio, CineMag or AMI. The result is a mic that looks and sounds amazing. Our circuit also offers an optional internal pattern switch for when you want an Omni mic.