let me end the confusion here:
the 88-91 civic hatch came in 3 trims:
STD:
- no rear emblem
engine: D15b1
4 speed tranny
no rear wiper
no power steering
DX:
- 'DX' rear emblem
rear cargo shelf
rear wiper
engine: d15b2
4 speed or 5 speed tranny, this depended on the year, it did for a fact come with either.
optional power steering
SI:
- 'SI' rear emblem
rear wiper
rear cargo shelf
engine: d16a6
5 speed tranny
optional power steering
i can kind of relate to the confusion, my civic hatch is a STD model, but the PO swapped in a d15b2 sometime in it's life, aswell as converted it to automatic, and adding power steering. running the vin says its a 4 speed STD model though.