Core support question
 

Hi guys,

Working on restoring my 76 RS. The core support is shot, and I know a junkyard that has a decent one off of an 81. Does anyone know if a 78-81 core support will fit my 74-77?? The 76 core support online new is very expensive (like 350 bucks, which seems high to me). I can do some modifications if necessary, but wondering if the general dimensions are the same. Thanks!

Brian