any one know what this is? http://i831.photobucket.com/albums/zz233/Toste_bucket/66%20chevy%20C-30/0606100654a.jpg http://i831.photobucket.com/albums/zz233/Toste_bucket/66%20chevy%20C-30/0606100654.jpg its at the back of the valley. it lines up with the hole in the block ( i think the hole is where the distributors used to be put in?) what is it, what does it do, do i need it and can i get rid of it if i dont? thats my general approach to autos. lol. not always the best way, but ill admit that it makes me learn from my mistakes!

66' Chevy C-30 Rat