I just did this on Monday. Hardest thing was drilling the 2" hole w/ a hole saw. Purchased off Ebay after finding correct part number. They come in 7 & 9 foot lengths. I went with the 9' but mounted it dead center over the drivers side wheel well. 7' will work if mounting in this location on a 6.5' bed. Go 9' for 8 foot bed.
Bill, Maura & Rosie the rescued Boston Terrier
2016 Winnegbago Adventurer 38Q
2014 CR-V EX-L w/Nav & Blue Ox & Ready Brute Elite
NRA Endowment Life Member & FMCA #455593