WTB / WTT - Shimano Pro Synop Pro clip on aero bar

hello - i was wondering if anyone out there has a Synop Pro (i believe made by shimano) clip on aero bar they would be willling to part with?  i have some like new take-off vision j-bend, 270mm that are just too small, or a set of blackwell research aluminum clip ons that are new (they were however mounted but never used or wired).  would also consider purchasing them but am on a tight budget.  thanks!!