swingarm extender?????

I have a 2007 r6 and I have seen various "swingarm extenders", but most are on shady websites. Two things, does anyone have these on there bike, cause if so I would like to see a pic, also would you guys recommend getting them. I know I would have to get a bigger chain and some said longer brake line but it sounds alot better than dropping 2 grand on a whole new swingarm. Let me know what you think.....thanks.