I already have it, I just haven't gotten around to welding everything up yet. I got the short (12in) from YONAKA, which is about 16 in overall and beautifully polished. I, too, am going from 21/4 s into a single 3in with the resonator being the 3 in model. I am having to do a lot of work to polish the rest of the system to come up to Yonakas' level.