The P locos (as re-builds of 1955 T class) and H cars as re-builds of 1956 suburban cars would be a high priority for replacement . Ditto the few A class locos as re-builds of 1950's B class .
However VLP has an exploding patronage which looks likely to achieve above average on-going growth owing to frequency of service offered, value for money fares, and sustained high pricing of petrol.
Currently on order 14 intermediate motor cars for building up 14 Vlocity sets to three car consists will be delivered in 2008, and 2 x additional 2 car Vlocity sets (plus the single replacement for the Trawalla write off) are expected late this year .
Would expect VLP to move progressively to situation of total DMU operation in off peak, topped up by N class loco hauled operation in peak periods on Inter-urban runs only .
You certainly won't see a loco hauled N set on Echuca as that would only be allowed 65kmh beyond Bendigo extending the already too slow travel time. In fact given the low passenger numbers generally beyond Bendigo on both the Swan Hill and Echuca legs , those services will no doubt get Inter City DMU's with catering first . The Warrnambool and Albury services would go DMU last as they have the biggest patronage beyond the Inter-urban area .