Here is the 501 as it is so far

Driver Trailer Brake Second. The cab is a Replica MLV van end. I used a Replica long underframe non corridor second brake for the main part of the body. It has the required 7 compartments, and if cut along the guards door it is the correct length for this coach.

Same coach, it is mounted on a Bachmann short underframe non corridor chassis. The bogies need to be modified to represent BR2 with roller bearings and most the fitting underneath require removing.

Driving Motor Brake Second. Logic says use another Replica coach, Now I would have done but my local shop John Dutfield Model Railways had a large number of second hand Bachmann suburbans. I used one of the brake seconds, with again the Replica cab. The short Mk1 non corridors only have 6 compartments The end one is a left over from a MBS coach in a class 302 unit.  It is powered by a Replica short underframe motor unit. Their 57 ft motor unit only comes with 12 mm wheels, where the model should have 14mm. The side frames are quite heavy and with pick up shoes I don't think anyone will notice.

The whole train. The Trailer Second is a standard Bachmann loco hauled second, like the DTBS it needs work done on the underframe.

I am not looking forward to adding the 138 bars on the door drop lights.