I know this thread goes back a while, but last year I bought a strat style baritone neck from USA and married it to a strat style body, on the basis that my Jaguar has a very short scale, 11/2" shorter than a strat, or efectively starts at the first fret of a strat I decided that as this baritone neck was roughly 28" that would also be around fret one on a 30" scale bass.
I put a set of 30" scale 6 string bass strings and it plays fine, but always hankering after the real deal when the new pawn shop bass VI was released I tried one out and found to my delight that my home put together job plays better and rattles less.
Of course if you finger play it all gets a bit noisy but played with a plectrum it's fine.
Geoff