I did an engine swap into my 99 regal gs with the motor out of a 06 pontiac grand prix gt. My issue is that after i got the engine in and went to start it it just clicked i checked voltage tapped on it and charged the battery but it has the starter off of the 99 regal. my question is if there is a differnce in starter motors or not if so does any one have a part number for me. I could relay use any help i can get on this on the internet isnt telling me much