Picking up on HSB's point about the specificity of locomotives to certain companies of course he's right.Like he suggests I intend to "North Easternise" foreign company loco,s by the substitution of Worsdell boiler fittings etc.The fiction being that Lord Ravenbeck being a large shareholder in the NER often has his loco's pass through Darlington works on route to South Farne his island of the East Coast. One of the attractions of freelance modelling is the escapism into just this sort of historical fantasy and at the end of the day you end up with rolling stock etc which is unique to your layout and imaginary world.The purist might argue that this is just as well and the abomination should never have seen the light of day in the first place,but if it's convincing to you who cares.Should you ruin a loco and produce an abomination I suppose in extremise you can always cut it up and use it for spares in a more successful future attempt. I notice Edward Beal has been mentioned,I used to devour his books from the local library as a spotty youth and it's probably from him that I picked up the freelance bug. When I started this thread I didn't think there were many freelance modellers out there, but of course the light railway and industrial modellers have been doing it for years.If some modellers of slightly larger systems take the freelance path it can only be good for the hobby.