Is it possible to have the CS hud? Just the health bar because i dont use the reinforcements.

Sure, open your config.cfg and find this

cl_hud_ammo "1"
cl_hud_health "1"
cl_hud_msgs "2"
cl_hud_objectives "1"
cl_hud_objtimer "1"
cl_hud_reinforcements "1"

change it to this

cl_hud_ammo "0"
cl_hud_health "1"
cl_hud_msgs "2"
cl_hud_objectives "1"
cl_hud_objtimer "0"
cl_hud_reinforcements "0"

that turns off the ammo counter, the timer and reinforcements timer
tweak as needed to get the result you desire

No what I mean is is there a way to get the Numbers displayed as health instead of the little guy and stamina meter.

No, the way the sprites work is not by replacing numbers and counting down, but there are actually two sprites for the health. One is the the full red bar and the other is the background. The red bar sprite is placed over the background sprite, and as you take damage the red bar moves down revealing the darker color bar behind it.