how to upgrade Shimano Sora, 52/42/30 to ultegra dura

[B]

I am trying to figure what I need to but to switch from a Shimano Sora,
52/42/30 triple into an ultegra or dura-aace dble.

Do I need to switch out the reaar derailleur also?

Also can I get any arm length?

thanks all.

 

[Chris Dorn]

New front derailleur, new left sti, yes any crank length you want.
Chris

 

[George Ball]

Actually won't he need new STI left and right, and also rear derailleur,
since Sora is only 8sp?
"Chris Dorn" <[email protected]> wrote in message
news:[email protected]...
> New front derailleur, new left sti, yes any crank length you want.
> Chris