they are just a polished/chrome dipped ebay item.
u will need a greddy throttle body adapter (source from autobarn). it will come with a bracket for your throttle cable, then your laughing.
have a look at the diy section for the install. it was invaluable when i did mine
u will need vac hose, 3-4 brass nipples, fuel hose, heater hose for the aac valve idle control. and shorter bolts when u go to bolt it back on, gasket paper etc etc