Turbocharged Subaru FA20 Engine:

Dual valve springs with titanium retainer kit.
88lb seat pressure at 32.85mm installed height using the OEM spring base. 228lb at 11.0mm valve lift. 262lb at 12.0mm valve lift.

Coil bind (solid spring height) 18.55mm.

Brand Kelford Camshafts
Man Part No KVS87-DT