Front offset 530 sprocket

I am in the process of putting an extended(3.5") GS1100 swingarm on my '81 KZ1000. I bought a rear wheel from a '86 FJ1200 with a 41 tooth 530 sprocket on it. The previous sprocket ratio was 15/39. To retain a similar ratio I would need a front sprocket with 16 teeth and I want to go with a 530 chain. I would also like to move the sprocket 1/2" further out from stock. Where would I find such a sprocket? It's been 14 years since I rode this bike so I don'y remember if I liked the ratio or not but I figured I'd start where it was.

Here's a pic of the old sprocket:

Here are some websites to look at:
www.jtsprockets.com/
www.pmfronline.com/counter_shaft_sprockets.htm
www.sprocketspecialists.com/
www.sunstar-mc.com/home.aspx