I'm not 100% certain on this, but I thought the 2ZZ cars all came with standard Toyota Sump. Given it was a transverse engine in Celicas etc, I can't see why it wouldn't be standard. I'm not sure if any of the more lairy Exiges came with baffled sumps or accusump options etc.
Thanks for both of the responses, I confirmed it's the same sump PN for S2 Exige / 111R / Elise R on the Bell and Colvill website and Google AI reckons it's just the standard toyota part.
Appreciate the reponse and apologies for the tardy reply