The original pressure plate with the flat needle bearing was P/No. T1170021.
The updated plate is P/No. T 1170061 ( & the new-style bearing that goes with it... don't have P/No...sorry.)
As Warp says, the updated lifter piece is T.1170203.
Unchanged are the lifter shaft T 1170041, the wave washer T 3550380, and the spacer T 1170008.
Well, those were the numbers a couple of years back anyway!!!
And get 'em from Andy at North County Yamaha/Triumph in San Marcos....
andy@ncyyamaha.com better deal all round..............