Help IDing Ridley Supercross headset

I have a 2007 or 2008 (not sure what year) Ridley Supercross. The headset is shot from racing last year, and the bearings are stuck in the headtube. Thus I am not able to remove them right now and look to see what the bearings say. Does anybody know what type of headset (Cane Creek IS?), or replacement bearings are needed (36-45?)?

Plus, does anyone know if the Supercross has press in cups or anything in the headtube itself?

Thanks!