Wow....
Read the words on that link that I sent you for how to do the radiator flush. It spells out all the items you need, like your rubber slanted things.
Here is the link again - http://www.techguys.ca/howto/coolant_flush.html
Let's review some of those pesky wordsReading this post I'm thinking you are in way over your head on this project. Best of luck!While it is certainly not required, placing the vehicle on ramps may aid in the flush + fill process. If you are inclined to raise the vehicle for ease of access, be sure to keep the vehicle level.