From experience at reputable shops you are looking at $3k and up depending on what you want. Best bet is to go to a few shops, and let them see the condition of the current paint. Then discuss exactly what you want. If they have to strip the old paint down to the metal your looking at more cost. If the original paint is able to be sanded, and painted over it's considerably cheaper. I know the engine is blown, and you can't drive it. But, the current paints condition, and the quality of job you want determines the price. Do you want just a decent paint job, or one with no runs, no dirt under the paint etc?