Ive been reading a lot on the upgrade of injectors for the 4.0 engines, using Dodge neon or mustang injectors. I have an 89 Renix xj 4.0 no mods just stock trim. Ive done searches but can seem to get a clear picture on what will fit and what wont, so far all I understand is that I should be using 19lb inj. Can someone give me that clear picture as to what years of Neons and Mustangs with compatible injectors with part numbers that I can use.? Im leaning toward the Neon injectors but any straight info would be awesome.