The Miata is probably better suited to road racing though. I've never had any structural issues with my S197 on track.

The 4th gen isn't that structurally sound for road racing loads. Cracked k-members, cracked floors, bad front bearings, all really common stuff.

I haven't had too many issues structurally with the Fox yet, I do check the hatch panel gap and it changes every weekend on track (.25 - .5"). It seems to be a pretty flexible car even with the cage in it. If you don't brace the rear suspension pick up points on the fox you can rip them out.

I think there's an argument to be made that the newer generation of cars is more suited to road racing from a reliability standpoint, I know the S197 is.

- Josh