The 620, 695, S2R 800 & 1000 all share the same flange assembly (16021351A); the later 696/796/1100 have a different flange, (oval rather than round), but the pump itself may well be the same.
I would email Stu at ExactFit
sales@exactuk.com and ask for confirmation that it will work on your model and also that it is a straight swap with no Dremmeling/modifications needed.