He has an SE, C200k. Only Offroad models and manual transmission came with M226...only jeepers call them dana.
Just for giggles:
Check the sticker on the drivers door jam, look for "AXLE CODE", you should find one of these numbers,
C200 axle...
CA33
CA31
CA29
M226...
CC33
CC31
CC35
CC36
The 2 digits in the code refer to the axle ratio, for instance the CA33 axle has a 3.36 final drive ratio.