Need help NOS Sony 227ESD with single TDA1541

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I got a Sony 227ESD that I wanted to perform NOS mod as per the below link:

sony227ESD

However, my 227ESD has only one 1541, not a dual unit like Lukas has done 🙁 Can anyone point me to the right direction as to how to perform the NOS mod? I have already obtain the hacker chip. Much appreciated.
 
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