Shimano M520 SPD Pedals, quick question

[FlyingCyclist]

Yeah I took the cage with me this morning to Halfords (and Chevin). but didn't have what I wanted.
Picking them up on Wednesday

 

[I like Skol]

I'm guessing no one knows if SIS 800ml (Wide top) fit Elite Custom Race cages? (I'm wanting lightweight cages to keep weight down like the Elite)

Yeah, coz 10g saved on a bottle cage makes a huge difference when you are carrying close to 1kg of bottle & liquid?