Chaly face lift question.

Hi guys, With reference to my 1974 chaly. Im looking to replace the rear swing arm for a longer one that will fit ok without messing with the frame.I'm hoping a honda cub arm will fit as it looks the best. Also I want to lower the front end a little and have the dax' handle bars. Again can I get hold of forks that will do the trick without tinkering with the frame. I'm looking to get the low rider look without irreversible damage.
Any input would be appreciated.
Mondo