Doing a ls swap b18a1 in my 91 civic hatch si,
what all will i have to do for the obd1 conversion, or should i keep it 0bd0
planning on doin turbo eventually so obd1? for tuning?
also,
do i NEED to get b series motor mounts or will mine work?
please help me out asap,

 

I'm sorry, but it's VERY obvious you did not search at all, like at all or you would of covered your last question.

You need conversion mounts. Our older cars don't accept B series as easily as the 92+ civics. HASport makes a nice kit.

I PMed you about converting OBD1.

 

https://honda-tech.com/zerothread/1508680