thanks! and yes, im swapping a turbo motor into the n/a car
No, it's not worth it going to E85.
I takes roughly 1/3 more E85 to do the same work as gas. So this becomes $3.99-$5.32 to go approximately the same distance. New parts (tank, injectors, pump), and a way to tune it all.
If you have 89 around you, that's all you really need unless you're running boost (I don't recall if this was a turbo car). It was designed for 87 but that's pushing it IMO.