The latest FT's do come witha tapered shaft, it is quite a bit thicker.
Other items that have been changed between the new car and the old car.
Other differences that stand out are the new gearbox's ( they have redone the mould, everything fits together with no binding ( no more dremeling the cases
)
The springs in the 2 speed have bene changed, these hold the setting much better then the old spring.
For all of you wanting to try a centax, I would hold off just a bit longer, Barry Baker ran the Yokomo version at the speedline race and liked it.
I heard today that AE is going to package the Yokomo Clutch under their name. (Same as the current HD One Way)
hopefully this rumor turns true sooner then later