I dont want to sell my sc but its not what i want stock ge.. So i have 93 sc300 2jzge..

parts that i have are

turbos
manifold
1j head
440 injectors
fuel pump
apex tuner
coils
soarer ecu..which i cant use with auto ge trans.so the question is

How do i do a patch harness with a mega squirt standalone?

 

are you selling those listed parts? if so what type of apexi tuner? the blue/grey or black neo?

 

Based on this thread and the others you've posted recently, I think your best bet is to save up some money and pay someone to do it. Consult some local shops and see what they'd suggest you do with what you're working with since you're not happy with the answers you've received here.