Found an eBay ad claiming s5 trans has different ball and bushing sizes than the s4 or Miata trans.

http://www.ebay.com/itm/NEW-HEAVY-STEEL-86-91-MAZDA-RX7-FC3S-90-97-MIATA-SHORT-THROW-SHIFTER-/271181215585?pt=Motors_Car_Truck_Parts_Accessories&hash=item3f23a8f761&vxp=mtr
Can anyone confirm before I order a Miata shifter for my S5?

 

The bushings are all the same, the only difference I know of is the S5 has a plastic bush in the ball groove and the S4 does not.

I have a Miata SS in my S5.

 

thread for the shift **** is the obvious ID

 

Clokker, you're the man

Thanks dude

 

Oh yeah, that too.

 

I think that the MX5 SS can be used in any RX-7, just differences in bushings and their applications between the generations.