Upgrading panel in older piper with newer piper electronics

[JOHN41057]

Hi
I was wondering if electronics are certified for a newer model PA32-301T and you assume@@@@ they are fine to consider installing in an older model PA32-3017. So say in 2007 The Saratoga (PA32-301T) came from the factory with AVIDYNE EX5000 Primary Flight Display (PFD) and AVIDYNE EX5000 Multi-Function Display (MFD). Could you install this system in your 1984 Saratoga (PA32-301T)? Would this be possible or impossible? Would you need a new STC?
Regards
John

 

[greghughes]

 

[PaulR]

 

[JimC]

 

[Dravnx]

 

[PaulR]