New Member in search for advice..

Hello all, I'm a virgin when it comes to dodges, I just bought a 72 dart swinger. My question is is it better to keep it stock with the factory color and the original slant 6..or put a v8, change the color, put in disc breaks I just don't want to frowned upon..If its ok to change it up what is a good place to find the upgraded parts..Thanks:newb: