OK, for the chinese ink , here in Guatemala we use stylographics , or rapidoliner ( staedtler, rotring, fabercastell) to draw blueprints, it comes in reloadable stiles of dispossable, comes to in many points, .01 , .02, .03, .04 and thicker, in sets or singles
http://www.chartpak.com/kohinoor/1drawing/rapidolinerpens.html
thi finer was used to add some shados inside the grilles, and arround the stop lights
, and more for the front frille, a little patience and a cd of A-ha, i the grille is too little you can use the chinese ink thinned in water ( enly water) and aplied with a fine pencil maybe a "0" and patience as you can see in this chevy 39 (not finished yet) like a wash and let it dry