Well the entire engine is 1970 design so it fits perfect. . . . .
As a matter of a fact its a very popular 2 stroke racing carb..  I can only recommend it! .. specially if you want it in your stock boot and not use additional 100$ on that...  BESIDES the PWK is NOT available is size 34mm if thats what u want.. that was what i wanted. I dont think it is possible to have a PWK on a stock boot..   That was my goal.. 
(I bought my PJ from brand new.. and there was a little sticker on it: MOTORCYCLE RACE USE ONLY!)  .. I like that! hehe .. 
I dont think another carb is so hightech that its gonna do ANY difference..  the PJ has a flat oval slide chromed throttle "lever" .. soo smooth and nice to operate.. and insane response.. 
Like i said.. I can ONLY recommend it.