Need to replace coolant hose (S5 NA)
 

So a coolent hose sprung a leak a few days ago and it overheated, I turned it over today, and it seems to run fine, I'm not smelling any coolant burning, etc. However I want to replace that pipe. I have found the pipe, I am just unsure how to get it off and where I can get a new one. How should I go about doing this?https://cimg8.ibsrv.net/gimg/www.rx7...8dc29e64b4.jpg
https://cimg0.ibsrv.net/gimg/www.rx7...1fa8e504f1.jpg

pipe pictured is for a/c, it is not where coolant is coming from.