+1 Be careful on the road peeps, you never know what might happen... Last week some stooge in a VW Golf almost rear ended me on the motorway. I high beamed heam continuously as he overtook me, he just sped off almost taking out 3 other vehicles..
I havent seen the Toyota Accessory guide so i cant confirm. Yes, the screen will show titles and listings from your Ipod. The best thing to do is Call/email Toyota spare parts and they should be able to help you out.
20 inch will fit and will look great. the only thing is cops and Insurance companies may not like it. Id say go for the Osaka Wheels, ive seen them on a few cars, they look great at night.....