2 pack isocyanate is deadly with out a air fed mask or at the very least a proper professional paint mask,also a proper extractor booth and screens .I use it on model car bodys and its great and very shiny and hard though a bit thick on smaller items ,I dont spray it for more than a few minutes at a time ..There is also the new water based auto paints ,also sometimes called 2 pack which uses a water based paint and a clear coat .The clear coat can be something like Halfords /Hycote car spray or 2 pack Iso .Great paint for modelling but delicate until its clear coated which acts as a bonding catalyst .You could clear coat it ,then apply any lining ,then satin coat it or whatever . www.hiroboy.com sells water based paint in the UK in small quantities but mainly racing car colours ., For GWR green for instance you would be on your own . I often used Scalecoat 1 which is a resin based paint .Uses Xylene as its thinner .I used to bake it on US brass and it came out a rich strong gloss which was fine for decaling .Basically it seems to me ,the smellier and more deadly it is ,the better it stays on .Enamel is probably best and safest unless you have the equipment,premises, and skills to use the others properly .