Shimano RSX triple crank arms or chainset - possible swap?

[development_cycle]

I have a 170mm set of triple RSX cranks, but really would prefer a 172.5mm set or 175mm if not. Would prefer a swap if possible, but otherwise would buy yours and then sell mine. Would consider complete chainset or just the arms. I'll double check and confirm the number, it's the second generation RSX for 8 speed.

Thanks