2000 Chevrolet tracker battery?

todays date is Sunday august 3rd 2008 i have a 2002 z series tracker and the battery is now bad i am a mechanic and have looked all Sunday morning and have had no sucess with looking on line for a bci group you know 75 or 35 or 24f series but nou i feel a little stipid i will go outside and look at my original series i will be right back a delphi 24r hope yours is the same good luck