I emailed a couple of companies regarding mounts for the Mk3 Foci, to allow the fitting of aftermarket seats. I received an email from Planted Technology today, asking me to spread the word that they're looking for a Mk3 so that they can start developing such a piece.
Attn: Planted Technology is looking for a 2012 Focus!
2012 YB ST-Converted Focus Sedan [Performance Ford, Sept '14]
1992 BW Grand Prix SE Sedan [restomod project]