OE was Ditzler enamel, Ditzler is now PPG, look for a PPG auto paint supplier in your area, for primers I would use DPLF epoxy primer and K36 high build primer, for basecoat I like DBC, DBU is also good but uses a reactive reducer, as for clears they have a few different urethane clears that are tailored to different spraying environments. IMO, for the most part, PPG produces user friendly high quality products. Hope this helps
