hey guy i need to replace the gear box in my 1500 and i have a delphi 26078664 wondering if it will fit? thx in advance

 

quick history of problem. really bad front end wobble when it started was only around 50mph and intermediate. now it will happen between 30 and 70 every so often but 90% of time its between 45 and 55. everything you think it would be is good and tight or new so last piece of the puzzle is the gear box. ill entertain any other ideas? thx