G10

I recently asked my local garage to change the rear arb for an after market 23mm arb on my Hawkeye, after I had failed due to a slipping nut and lack of time. When they changed it, they said it was too wide for the car / drop links and one of the bushes was loose.

Should the rear drop links on the hawkeye be the 'C' shape one?

Should there be another part that sits between the rear arb and the drop links?

Thanks,
Gio