I had a white H reg Rover Metro (GTa I think), a long time ago, bought it unknown at auction for £1800,
Turned out it had a blown head gasket,
I remember when doing the head gasket I broke one of the bolts off just above the thread, (not aware of the perils of re-using stretch bolts)
The bolts were 16 inches long, and screwed into the very bottom of the block , the bolt hole opened up under the head into wider waterways at the sides of the cylinders.
I managed to get a grabber tool all the way down the hole, and unscrew the broken thread.
However, when it reached the underside of the head, It was then too wide too pull out of the head with the grabber fingers around the thread, so I had to release it into the unknown.
I then got a telescopic magnet and it pulled it straight out..
God smiled on me that day.....
Anyway, drove it for a couple of years more and sold it for £2200...
Looked like this one, these wheels, but with red inserts on the black trim:
was a great little car.
.