I had one split just outside of warranty ( late 2015 car) - 1 was stiff and brittle ( split) the other was supple and ok. I went down the universal route as mentioned by Richard - I fitted it myself and it wasn't a bad job to do. Just a case of take time ( and photos to be sure I guess) - its simply dismantling and re-assembly. It surprised me how well it all went - well within the scope of a keen DIY Morgan owner.
I used a "first line" universal kit Part number FSG4000. About £10 for 2 on ebay.
