Farish Class 57 - bogies / snowploughs

[davidinyork]

I've got a Farish Class 57 in FGW livery (one of these: https://www.hattons.co.uk/52813/graham_farish_371_655_class_57_3_57605_totnes_castle_first_great_western/stockdetail)

I am intending to get it repainted into the current green livery and want to put snowploughs on it as the real ones have them. Obvious potential solution is Farish Class 37 ploughs, which are available as spares and clip into the bogie holes used for the NEM socket:
https://bachmann-spares.co.uk/product/class-37-accessory-pack---yellow-snow-ploughs-371-170/f7117-219-01

That brings up the next problem, which is that the earlier 57 models (including this one) don't have NEM sockets. However, the newer 57s do have the sockets, and the bogie frames are available as spare parts:
https://bachmann-spares.co.uk/product/category/1168/class-57-bogie-frames---plain-black-371-650/f7165-243-01

So couple of questions which I wonder whether anyone can help with:
- Are the later bogie frames (with NEM sockets) a straight swap for the older ones on this model?
- Has anyone tried fitting the Class 37 ploughs to a 57 in this way, and does it work OK - i.e. is there sufficient clearance or do they foul the buffer beam?

Thanks