I got a 2 peice tomos bi-turbo from Ike, and installed it on my sachs. I just slipped it on the sachs pipe, and used a peice of roof flashing as a shim. a peice of coke can would have worked. Just wrapped the flashing around the sachs pipe and slid the tomos pipe over it---- it fit tight.
I still need to drill a mounting hole in my muffler bracket. I ran around for about an hour tuning it. I just used a small pair of channel lock pliers to hold it together temporarily.
The speed picked up quite a bit, especially mid range. I can go as fast as I used to at about 3/4 throttle.
Still need a speedo cable to tell for sure-- Looks like I'm going to give handybikes a call.
I'll post pictures tommorow.