I have A 1995 Q45 and a 1990 Q45 , I was thinking about swapping the suspension from my 95 q45 to my 90 q45 is there any difference because the suspension on both cars look almost identical

I believe at least the front shock mounting points are different. I would think it's going to depend on how deep you go into the swap. You can compare part numbers by looking at part diagrams on https://parts.infinitiusa.com/

The only thing that's different is the hole size on the front shocks on the 95 Q is bigger than the 1990 Q, but it's a pretty insignificant difference so it should be good. Otherwise, everything should be fine.

Thanks so much Q451990 and elwesso you guys have been old pioneers on this Infiniti Forum site, its good to know you guys are still around for some great infiniti support, I will start doing my swap tomorrow, I even have the original Nico Ecu which i purchased years and years ago so it will be great to drop it into my 1990 Q45 I will also be using the TCU out of the 1995 Q45 i will used that 95 TCU until i get my hands on a 1993 q45 TCU, and thanks again guys for all of your help. Ozie