You would like to know what should you know if you want to put a 1.9 Sohc 2001 Saturn engine in a 1997 1.9 Sohc. Both engine has digit 8?

Does your 1997 have good computer chip. If not then its not practical to attempt. I have been trying to replace a 1999 engine with a 2002 engine because they were both a 1.9 Sohc SC Saturn. However, after purchasing the 1999 car I discovered the computer had been stolen. I tought well i would just replace the computer. Well computers don't come with chip and its has been impossible for me to locate a chip, new or used.