I have a 99 GTP and it has 170k. I'm having a shifting issues with my tranny. Some times it won't shift till it gets into really high rpms. Then it also jerks at times. Ive done a fluid and filter change and also used some lucus oil. From what I've read I need some solinoids. But I'm not sure what ones I all need. I don't want to get into it and have wrong ones. Thanks for any help