Ace Hardware has a serious selection of fittings and stuff. Lowe's was out of one part when I did mine and I went to Ace and they had every variety of fitting under then sun!
Sorry, I shoulda listed them as an alternative source.
Like I said in the beginning, once you have all the right parts, it's cake.

Oh yeah, as far as the heat question Fatboy had, I just did 1900 miles this weekend in the Fla, Ga, SC sun at 90-95 mph on the highway for hours and then lot of stop and go driving out in the boonies catching rattlesnakes and there's absolutely NO sign of melting, sagging or any other problems!