Did my inners recently with oem bushes. It wasn't exactly fun but didn't really take too long overall.
Make sure you've got the subframe support brackets removed. You can get the old bushes out without doing this, but you'll never get the new ones in.
Spray down the bushes with silicone spray, all over. This made a big difference.
Use a 4 inch g clamp to wind the bushing retaining clamp in to place. I didnt wind it completely home against the subframe, leaving a few mm gap seemed to make aligning the bolt easier.
You'll want the closed side of the "C" of the g clamp facing towards the sills, if that makes any sense. On the passenger side you'll have to disconnect an electrical connector, and on the driver's side you'll have to unclip some fuel hose, just to get em out the way.
That leaves room to get a medium mole grip in from the exhaust side (middle of the car) and hold everything together while you remove the g clamp. Make sure you don't accidentally grip them on to the g clamp!
With the g clamp out the way you can stick a screwdriver or pokey tool through the hole and align the two holes slightly better. Another option is to use a big bar, pushing on the top of the bushing clamp by levering against the bulkhead. Either of these might knock the mole grips off, so make sure they're fairly secure.
Once it's close enough you can kind of just screw the screw in at a funny angle, the OEM bolts are threaded down to a point so they'll kind of bite and work their way in.
I managed it on the drive on axle stands, could probably do it without too much faff a second time around to be honest. Mostly it was working out the best way to position clamps etc.
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