Painters help

Well learned the hard way that lacquer over a urethane type primer shrinks to hell and doesnt work lol, so dad got pissed and we sanded it all back down, he has decided to now use acrylic enamel, now the car is sanded down pretty well but there is still some lacquer in spots, is there a type of primer or sealer that should be sprayed on the car before the acrylic enamel?