I have a 1989 Camaro iroc z 305tbi am going to 350tpi I bought engine out of 1988 firebird gta complete with engine harness ecm and prom and mass air flow sensor. The question I have is my battery is on passenger side and my evap system on driver side and the harness I am putting in is opposite what is best way to deal with this. Thanks

 

Move battery, replumb the evap to the other side. That's what I did. Works great.