Has anyone out there used the ZOOM D2, yet? Like others, I've been looking into a twin-disc setup. The stock T/O bearing decided to give up the ghost, so I'm making sure I have a replacement clutch setup ready. Is it true that the exhaust can stay installed, when removing the trans? Does this go for an aftermarket exhaust? I say it look like it's possible. But, I'm not sure. Any tips?