The ESP Guitar Company

Hi, I have an LTD-F100 (not F-100FM) that I purchased back in 2003. I don't think this model was around for very long as they soon after came out with the F-50 and F-200. I am looking for information/tech specs on what kind of pickups it has. All I know is they're some model of Seymour Duncan passives. I want to possibly replace them with but want to know more about them before I do. Any info would be helpful. Also, if anyone knows why this model wasn't around very long or knows the story on it, I'd love to know. I always thought this guitar played way above its price point (~$220 if I remember correctly). I love playing it about as much as my EC-1000 Deluxe.