[NOT A TA]

You can just order a replacement vinyl roof. They come oversize and get trimmed to fit. I order mine through a local upholstery shop but companies like Year One/Classic industries sell them also if you want to mail order it. They are held on with glue which is sprayed on the car and vinyl using a regular paint gun and compressor. Make sure the bodywork is done well and painted. The plastic clips the trim snaps onto are available as replacements through local parts suppliers, (not chain type stores) take a sample so they can match it up in their books. Be prepared to remove the rear window and fix the backlight opening as water collecting under the edges of the vinyl probably caused rust in the area between the clips that hold the trim. The clips hold the vinyl tight to the body so theres not usually as much rust close to the clips.
Oh ya the thin trim on the body comes off with a putty knife. Slide the knife down the vinyl 1/2 way under the trim then slide sideways till you feel it tight by a clip and lift the handle up away from the body keeping the blade flat on the trim.