Ok

Here is the fact
The fd 1993 5th gear ratio is 0.719
The type rz 0.760
The R spirit 0.801

The Fds 1993 is way too low , the R spirit it too hi , but the Rz one acording my taste is perfect.

But the Fc turbo 1988 have the 0.760 one too!!
So im wondering if i can buy the FCs one and change it to my fd gearbox

 

It's possible, the FC and FD transmissions are a very similar design. Swapping out 5th gear isn't too bad to do either.

I prefer the US 5th gear for better fuel economy, though.

Dale

 

Well yes but my car is more track foucus

To be fair the fuel consumtion is bad anyways
I change the rear diff for the same reason , now is 4.444 and it makes a huge difference
Still im loosing in the 5 th gear bit i dont whant to change it for the jap one cause with the 4.444 rear diff dosent work that well
The 0,760 will be perfect