I have a Goodman heat pump model # CPL E 30-1 And need a evaporator coil for my air handler. only problem is someone took the I.D. tag off t

Your heat pump is  a Condensing Pump Lovered Efficiency 10 SEER 30,000 BTUs, 1 phase (2-1/2 Ton capacity). See a picture attached below with the list of its air handler options. It is very likely ARUF030 and it's coil would then be CAUF030  (A Coil Upflow/Downflow Flowrator). Check another attached picture for the dimension drawing, you can use it to see if that's in fact your air handler. If this isn't the right model, look around the net for installation manuals of the other models from that list, the manuals always contain a picture and a dimension drawing of the unit that will help you identify it. If you're looking for just the coil and yours is an updraft/downdraft model, another picture here contains a snapshot from a Goodman service manual with part numbers for the uncased coils. If your air handler needs horizontal coils, the letter "U" gets replaced with an "H".