I've got a Fuji Absolute 1.0 with a Shimano FC R553 triple crank.

It took me a while to figure out my crank arms are too long... 180mm,***(RE MEASURED: CORRECT LENGTH 175MM)*** and I'm 5 ft 7.5" with a 30" inseam. My Fuji Roubaix 1.0 is extremely comfortable and has 165mm ***(RE MEASURED: CORRECT LENGTH 170MM)*** cranks.

MY QUESTION:

What inexpensive Shimano cranks have arms that will bolt on to my current FC R553 crank? I don't want to spend the money to get a 105 setup, and I cannot find an FC R553 for sale with 165mm cranks. Looked at Shimano compatibility chart, but it didn't help.

I have found Sora and Tiagra triples with 165mm cranks, but don't know if they'd work.

Thanks!

FORGOT TO ASK: WILL I NEED TO CHANGE THE CHAIN? CURRENTLY RUNNING A SHIMANO 105...