The car is a 2005 Mini Cooper. The bolts that hold the exhaust mounts in place have rusted and snapped on both sides:
I've taken up the floor of the boot and have located their heads on either side:
If I took it to a garage for repair are they likely to just grind the rusted heads off and tac some new fixings to the underside?
Is it worth me even attempting to drill these out myself and put in new bolts for the rubber mounts? or is this a relatively common job that most garages could fix in 30 minutes?