What is the interchangeability for a 2003 Infiniti FX35 RWD transmission?

What is your question?

Hi, I'm wondering if I can replace a 2003 Infiniti FX35 RWD transmission with a later year Infiniti FX35 RWD transmission? ex. replacing a 2003 FX35 RWD transmission with a 2004 (or later) FX35 RWD transmission. I have also seen an install of a G35 transmission in place of an FX35 transmission? Is this an option? Thank you!

How long has your 2003 INFINITI FX35 had this problem?

about a year