RB20DET Turbo 10psi waste gate and no shaft play $100 plus shipping($12).
1G DSM BOV/BPV $50 plus shipping.
SR20DET T25 turbo inlet and outlet pipes $50 for the pair or $30 each plus shipping.
Used Innovate LC-1 Wideband without the gauge(o2 sensor included), perfect to wire into your ECU. $80 plus shipping.
Bipes ACU for a 1.6 or 1.8 Miata. This is a piggy back ecu that dynamically pulls timing based on air temp, boost and knock. This is a cheap solution with an FMU for a turbo set up. $100 plus shipping.
All parts are located in San Diego, CA.