Motronic 1.3 Pin Map (#172 ECU)

[Charlie Oscar]

Anyone out there know where I can get an ECU Pin Map for my Euro 320i. Only ones I've found on the web were for Motronic 1.5 and there are some differences...here what I've got:
--1991 320i (Japan Market) w/ M20B20 engine
--Motronic ECU #172 with 1.3 version (55 pin connector)

The 1.5 version pin map is close, but no cigar....Any resources out there I can tap??

Thanks, in advance, for the help.

C.O.