The vented ATE calipers will bolt on to the steering knuckle (same hole spacing as the Girling non-vented calipers).
Not sure if the spacing will be correct with the 164 rotor on an 1800 hub.
IIRC the 1800 hub is different to the 140/164 hub (164 hub has longer studs than 140, otherwise the same).
Early 240 hubs take the same wheel bearings as 140s but are a different size again.
