HN isn't really much of a Q&A site but there both quora [0] and stackoverflow [1] have existing questions and answers that may point you toward better answers.
SCTP is a below HTTP so you'll find some operating systems with drivers that can communicate using it. A quick look at wikipedia shows this fine list of implementations in the OS and userland implementations [2].
I'm not aware of anything that serves HTTP exclusively over SCTP.
You may want to pay attention to devices along the path which could cause problems though! [3]
[0] http://www.quora.com/SCTP
[1] http://stackoverflow.com/questions/tagged/sctp
[2] http://en.wikipedia.org/wiki/Stream_Control_Transmission_Pro...
[3] http://serverfault.com/questions/145716/sctp-stability-and-p...
