door weatherstrip is still available in a roll; all of the Fiat vendors, including myself, have it. Engine w-strip on the sides is the same as the door rubber. I'm not sure about the strip on the cowl, but probably just flat rubber would work in place of the oem stuff
a roll has enough to do both door openings from the top of the windshield to the rear top of the door, with about a foot or so leftover. I'll have to check the price when I get into the shop on Monday.