Are there any differences between mk1,2,2.5 for the mx5 steering knuckle/hubs and rear uprights?
Thanks
Chris

Have a look here

Mk2 / 2.5 Rears are a little wider than mk1's adding somthing like 11mm in total to the rear track.

Mk2 / 2.5 Fronts have the steering arm around 7mm higher than mk1's. Said to be an advantage on a haynes roadster.