Unfortunately the CZs only have dovetails as standard. I suppose the action could be drilled but a custom sight base would need to be made to incorporate the recoil lug on the LHS of the sight base - unless someone makes this already (haven't seen one though).

I'm not all that upset about the look of the NECG - it's a bit Garand/M14-esque (which is out of place on the more classical style of rifle I admit). Functionality is excellent and good price to match. I have taken the hood off the front sight which helps the overall appearance and takes away the distraction when sighting. The NECG is at the perfect height for me - I can throw the rifle to my shoulder and there's the sight picture, nothing to line up really - just put the front bead just under where you want the projectile to hit.