you could make your own intake... thats what I did. Didn't cost me anything , cause I already had stuff lying around (well, not counting carb, just the intake).
Jcams is really the only performance tomos intake in production. You could go with an intake off a later tomos, which positions the carb (SHA) on the side of the frame. Not really a performance upgrade though, unless you bore it out a little + get a bigger carb.