I guess it's possible. But I've seen lots of people post problems on this board, Clifford's board (when it was up) and inliners international about leaks with tube headers. If not sooner, then later.
I'm thinking of a real solution for those of us who want dual exhaust sound/performance without the hassles or fears of leaks (tube headers) and the expense ($300 after shipping and install kit) of Stovebolts.
-ftyler