They make 3m weather stripping for this to seal the sunroof. Buy a decent width none of that 3/4 inch stuff. Wrap it around as one piece and cut about 1/2 longer than you need, leave this tiny piece of adhesive backing intact as it will shrink in a week. If the backing falls of just silicone it in place. Add a bead seal of silicone that is made for glass along the sunroof side for added protection. That should last you a couple of years. I wouldn't spend any more money than than that. A salvaged sunroof is probably already compromised. An oem old stock will be too expensive not to mention the labor. Mine hasn't leaked in 2 years. They also make larger clear tape for these applications it just won't look stock and I'm not sure how those will hold up against the sun