Fred,
The Sunburst was a ten-spoke wheel design pressed into service when a shortage of the Halibrands used on the S/C and Comp cars arose. I would post a picture but I don't have any on my hard drive and my scanner has taken the evening off. Perhaps Computerworks can post one from his extensive photo files.
There are a number of us here who are fans of the Sunburst, perhaps because of its rarity. I have read that there was a company who reproduced the wheel back in the 80's but I've never seen a set for sale; indeed, I've never seen a Cobra replica with a set on, so if somebody got their hands on a set of them they'd definitely have something that few replica owners have even seen before. On a "street" model 427, i.e., no sidepipes, no hood scoop, no rollbar, they look tremendous, IMHO. I wish somebody like Lynn Park at Trigo would reproduce them...