I'll give it a try. Assuming they used the same ordering codes for export cars as US-built cars...
AB=31 - 273 V8 4bbl
C=5 Maybe code 325 Performance package: 273 V8 4bbl, heavy duty springs/torsion bars, power brakes
a=C Don't know
b=4 Probably code 534 day/night rear view mirror
p=9...