In Japan the SW20 came in 4 trim levels:
G
- base spec
- 3S-GE engine
- manual windows, locks, etc
G-Limited
- luxury non-turbo
- 3S-GE engine
- power windows, mirrors, locks, etc
GT
- luxury turbo
- more or less like a USDM turbo with all options
GT-S
- sports turbo
- sports seats
- less luxuries
There are a lot more differences, but that is the gist of it.
In Australia the SW20 was sold in 2 trim levels, both with the 3S-GE (non-turbo) engine:
Bathurst
- fairly basic specifications
GT
- non-turbo version of the Japanese GT