Welcome to the site!!
Tops and enclousers are custom made, I doubt you will find any tht will just fit the boat!
You can buy a Bimini top off the shelf and then have the enclouser made later.
As far as the rail is concerned, you can try to make yourself or have one made?? If you do it yourself fill the rail with sand first, will make bending with out kinking easy!!
But the rail ot these boats really don't do much and I took mine off, filled the holes and did not worry any more!
Hereis mine after the rail was removed, just scroll down a little when you get there.
http://www.wellcraftv20.com/communit...highlight=rail