More pics, first couple of coats of undercoat, still a bit see through in places, at this stage i filled a few spots i had missed with some Polyfilla "Skim Coat" and let that dry. Then i sanded filler smooth with some 240 grit sandpaper. After that i gave the cab about another two or three coats of undercoat and and left it to dry for a few days before sanding.

When dry i sanded it back with 240 grit then 400 grit, ready for the white basecoat. I used Dulux Vivid white enamel. last couple of pic show where im at with it at the moment. The basecoat was sprayed on on Friday, i'll allow a few more days before starting doing the stencils.