Want to intergrate dx10 into gstudio engine i find dx9 header though onle to change that except for gxlbas2dx9.dll an so on. Do I need to buy full version gstudio sdk.

You can mix DX9 and DX10, so integrating DX10 in the engine is theoretically possible with the SDK. The GXL libraries however are for WED and MED only. For the engine, you could use the SDK for implementing an own DX10 renderer that overrides the engine's render functions.

so overide it in sdk thanks.