You have to basically edit the script code, to make the text "bigger".
This is a custom HUD message, what you need to do is to port it to D-HUD. The more bigger size.
If you do have the script file on your hard drive, upload it here... mostly called ".sma file". (Only with your permission, you are not forced to upload if you want to keep it private. If you do you should learn the way to change it to D-HUD.)