Probably front has holes and options for adjusting castor while rear has a single hole in center. They are the same otherwise.
ah, good catch. i'd assumed they were all adjustable, but if you re-read perhaps not. why would you not get adjustable caster option on the back - with 20mm shims on the back you could run 996 rears but would need to adjust caster to address.
ah, good catch. i'd assumed they were all adjustable, but if you re-read perhaps not. why would you not get adjustable caster option on the back - with 20mm shims on the back you could run 996 rears but would need to adjust caster to address.