The remaining 2 panniers are Bachmann bodies with Comet chassis, one with a Portescap motor and one with a Branchlines gearbox. The issue with fitting a scale chassis under the Bachmann body is there is no boiler bottom as on the Bachmann chassis this is part of the chassis. I have made up a boiler botton for 9774 but remains a job for 5712. 5712 is also an early style cab. I have a High Level chassis to build so this may well end up as one the Panniers sold to the NCB such 7754 and painted bright green.
Some of Wellingtons Pannier tanks had overhead warning flashes for working into Crewe on the stoppers from WEllington.