Believe it or not, my headlight bucket was cracked too. After riding down to the parts yard, I found a mid-80's Zuki 750 headlight fit perfectly. And the bonus was a chrome bucket, and I was able to finally get a bright halogen bulb in it.
I am a fan of Honda's, but the early model buckets just don't seem to be made very well. I have always replaced every one of them, including an early Yamaha assembly on the 550.