I am interested in buying a car to decorate

I am interested in buying a car to decorate. Look at the Sewick for second hand and the shape is ok. It should be beautiful but I don't know much about the engine, and I heard that there are fussy problems, especially about cars. Do not know if buying to decorate it will be worth the cost of repairs and decorative items. Rare? But as far as studying and looking, there are a lot of decorations But the strength of the price is a lot too, quite expensive