Hiya.
Don't have one spare I'm afraid, but a friend of mine has made all his from either Old metal Oil tanks or those big round plastic diesel type tanks - with holes cut out for the door way. They work superbly and I wish we'd thought of it a couple of years ago
Try your local Oil supplier and ask if they have any split tanks they don't want.
And....if you're looking for piggies, we'll have our next litter of Berkshires due around August and hopefully (as long as I can collect her in 2 weeks time), we'll have some rare breed Middle Whites around beginning of July time. Old Spots all sold from the last 2 litters now but next will be around Feb/March next year
We're on the Carms/Pembs border and have a couple of regular customers around Neath area - so delivery no problem.