AE70 = 1500cc 3A (not sold in Oz I believe)
AE71 = 1600cc 4A
TE71 = 1600cc 2T
TE72 = 1800cc 3T (T18 in Oz)
AE85 = 1500cc 3A (not sold in Oz)
AE86 = 1600cc 4A
The engine type (4A-C, 4A-G, 2T-B, 2T-G) does not effect the chassis number, it is ONLY changed by engine capacity (3A -4A, 2T - 3T). Body style etc makes no difference at all.