L-159 single seater

I wonder if anyone knows anything about the ALCA L-159A varient.The info Ive found is sketchy,features include composite/ceramic armour protection for pilot(which can be seen in photo behind pilot),fire control radar,air data computer,and a few other goodies.Ive always felt it would be an excellent idea to put a fuel tank in the rear cockpit area to get the perfect longrange light strikefighter,but theyve somehow failed to appreciate such an idea. http://flug-revue.rotor.com/FRTypen/Frfotmi2/L159ALi.jpg