The SG basic body is adaptable, that is the gearbox in general found its way onto many different aircraft types.. There was at least 41 different variants of the SG 1, but all used the same basic body. 

The SG 1/18 was used on the Meteor 4,7,8,9,and 10 starboard engine. Those same Meteor variants used various versions of the SG 1 on the port engine – too many to list, so I will use ‘X’.

On those particular Meteor variants, only the SG 1/18 had a hydraulic pump (a Dowty type 5700 RH/1800, whereas the SG1/’X’ always had an electrical generator (a Type KK in some cases). BOTH the port and starboard SG1/18 and SG1/’X’ had a Pesco vacuum pump type B3X Mk 2. 

To sum up, probably not a modification to the ‘basic casing of the ‘SG1, but simply a different installation. Have a read of AP 2240, Vol 1, Part 1, Chap 5 to get a better idea as to the adaptability of the SG and plumbing option available.