This is fairly easy to do and as others have said there are several ways to do it. I tried the Ford therm. plugs which go in the back of the head, but mine are not threaded and the plugs did not work, plus the room you have to work there is min. to none. So what i did was take a piece of alum. cut it to the pattern of the steel line that came off, drilled a hole in it just like the orig. had and put some high heat silicon on it and plugged it that way. You can not see it and it works great. It is bolted on just like the original. Another way is to use the orig. piece, cut the line off and flip them around and use the right side one on the left and the left one on the right. Better idea maybe then mine, I just did not think of it before I did my idea.
Good luck, you will like how much room you will have if you take all that crap out, if you emissions let you.