The A35 Tomos Biturbo will mount up pretty easily. Just a little Dremel work on the flange bolt holes. I got it to hit with stock cylinder and do low 40s.
Man this is good to know. I really dont want a biturbo on it but i do have one laying around so if i have no luck with my other pipes i can atleast slap a biturbo on it for awhile.
unless you want great low end.
a ripper that hits 35mph sounds nice to me! Im gonna start mocking up homemade header tonight. Im trying me hand at making a "better than stock" mj50 pipe.
Orange qt50 clutch springs will make it shift at 23-24 mph instead of 18 or so.
It did seem like mine was shifting around 18 (again it isnt running right currently) but that orange spring mod might be something i look at doing once i get the carb / exhaust hammered out.
You are a wealth of information on these!