e36 m3 rad with separate expansion tank. Which top hose?

[Supafly]

As per the title really. I want to renew the radiator hose and was wondering which pipe I should order from the dealers.

I've got a m52 with alloy thermostat housing and the wider taller radiator with no built in expansion tank.

Ive read in a couple of places that the m50 top rad hose should do but the pictures I've seen of them look wrong, although they may be generic library pictures. ... any help greatly appreciated