You'll find more in common with the TL, not the TSX. Things like rear sway bar etc are swappable, I'm sure lots of other parts. In fact the rear sway from the new TL will not only fit 7th gen Accords, but it will fit 6th gen Accords, leading me to think there would still be a significant amount of parts that would swap over to bother generations of Accords. I do know that some suspension parts are different, I know the my rear camber arm for my 6th gen is the same as the last gen TL, but not the same as the 04 and newer TL.