KTM 505 SX/ATV 2009-2010 Tuning kit stage 2

Tuning kit like stage 1 + The cylinder head is being revised: the valve seats are milled to optimize flow and the channels are optimized to increase performance. Including combustion chamber and channels, glass bead blasting. Price includes PROX top end sealing kit for year of construction 2008.
Please indicate the year of construction