Questions on C blocks from Mexico

[looneytuner]

I have a common block that has an O not C on it. I haven't seen this covered in the C block discusions. I'm also guessing ALL the 89 and up Mexican phantoms had the C block and forged iternals. Were they 2.2 and 2.5 or all 2.2s? I'm trying to work out a supply source.of the C blocks in Mexico for us and need ALL the details available.

[looneytuner]

bump

[starman]

All Mexican Phantoms in 89 have the 2.2 T2 engine, but in the year 90 they change to 2.5 T2 engine