Let me first start with this assumption. You have a full ABA motor head and all that you want to put into your Mk2, correct?
If that's the case, just get the whole harness with ECM. If you're already tearing everything from your motor out, it's not all that much harder to splice the 2 wires and put the entire system in. Easier than hybriding your current fuel injection to that ABA for sure



