I do have one 376 Salsa, 3 piece that I will build out to your specifications. Just let me know quick, because once its gone I don't have anymore stashed away. And no the Mocha isn't for sale at this time.
Blank: epic fiberglass 376, Mocha
Reel seat hardware: Lemke LC1, down-locking, Black Nickel
Insert: Black Ash Burl
Agate: Dark banded, Proof Fly Fishing
Wraps: Main- Chestnut, Trim-Sandstone NCP
Hardware: Snake Brand Black Nickel