S13loverdrift1

Well I recently purchased a nismo 2 way and I thought I was just getting stock gearing so I thought that would be fine 4.08 but than I found out later it was a 4.3xx and that's annoying me haha the car is a daily and that gearing is not really v8 friendly. Trying to cruise at speeds like 80 send my mpg down like crazy. So I was wondering has anyone swapped in the ring and pinion from the fy33 q45 because that would match my speedo gear and solve that plus it would give me way better for the torque in the v8. Sorry if the grammar is horrible I'm tired. Just wondering what would probably need to be done or extra things needed to change to that specific ring and pinion.