Here you go...https://www.amazon.com/gp/product/B019T30ML0/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
although I didn't see ivory. Maybe you can get white and dye it with some SEM paint? If you really needed the ivory....you can order it for a HZJ78(roof)....I *think* that's a one piece deal on the 78.....2 pieces on the 75s. Seems like the 78 piece was ivory as I recall.
I used about 26-27' on my truck....so I would assume if you bought the 78 series stuff from Partsouq, you would get about 27 feet.
Are you using it for door openings?