I have had in the past...
1974, 1977, and 1978 Pinto's, all were 2.3L automatics (Loved those cars)
white 1975 Mustang Ghia coupe 2.3L automatic
red 1979 Capri turbo RS, 2.3L carb turbo
black 1979 Capri Turbo RS, 203L carb turbo
orange 1979 Mustang Ghia hatch, 2.3L carb turbo
blue 1986 Mustang LX 2.3L automatic
and now my 1991 Mustang 2.3L/t5
In all those I have only had two problems.
The 1975 Mustang blew a head gasket (I was sure the leaking radiator and lack of fluid had nothing to do with it)
The black 1979 Capri RS seized from lack of oil (Honest, dont know how it happened

)
Im having a problem now with the 1991LX but I blame that on the factory original coil packs and ignition module.
I have never heard of a person breaking a crank or a rod on a street motor unless it was abused or was in bad shape.
The crank and rods were very strong for a motor of its size and its uncommon for people to break them.
The 2.3L was so rugged that Ford used it as a industrial motor in forklifts and Ford of Europe and Volvo used it in light commercial trucks because it was considered unbreakable.
The main reason Ford dropped it was it was difficult to get it to meet emmisions. Ford was dropping most of its domestic 4 cyl production and letting Mazda build them.
As far as I know the only domestically produced Ford 4cyl in passenger cars is the 2.0L DOHC Zetec motor, which was in recent years bumped to 2.3L.
God knows I have abused my share of the 2.3L's and was amazed to see them take that kind of abuse and still running.
The stock 2.3L was of a good size and design but was too low powered for the Mustang, it should have had a aluminum head years ago in the mid 80's and been putting out 125 hp stock. A Fox body Mustang at around 2800lbs would ahve been a fun little car to drive with a 125hp engine and a manual transmission.