Hello Kevin and thank you.
For a Beta, the 8 bushes are all the same as standard although the replacements offered by LanciaBetaParts are different due to the different construction of the adjustable arm ends.
You can see the different contact area for the two types of arm ends.
NB: Have corrected the internal sleeve dimension above to the measured 9.9mm but it accomodates a 10mm bolt/rod so must be 10mm.