Chevrolet: Small block to big block, 1978 chevy nova, chevy nova

Question
I own a 1978 chevy nova with a stock 305. I want to swap into a big block engine. Besides the motor mounts, what else would I have to change?  

Answer
Arthur;
 cool ,  - you should have no trouble , - you might need a larger radeator , also ex.system or headers are a lot better.and the rest of the parts should fit no problum .
and the motor mounts might even line up. and if the same tranny or set up  is used it should all bolt up for you.   ok , the only thing I can think of is the distributor could
or might- hit the fire wall but a wack of a hammer will fix that .