well when i look in my radiatoer its got a bunch of barnicles in my radiator i dont know how much is too much..i flucshed it but not much came out should i try to flush it again maybe that stuff is really stuck in there ..so if i elevate the front end i run it with the cap off and just keep dumpin fluid in it ?oh hey just in case i do have to replace my radiator whats a good website thats kinda cheap i looked at jegs but god damn its pricey how much do they really go for?also how do i know if i have a downflow or crossflow radiator??