The main loom now comes with the connectors for all variants, excluding the injectors which is a sub-harness, that is a selectable option when you order. The good thing about the WS harness is that the injector harness can be replaced or switched for the other style. This is handy if you change your injectors for a different type, or if the plugs have deteriorated and cause problems in the future.
The quality of these looms is superb; on my car it made it run smoother and cured an intermittent 5 cylinder issue on hot starts. I got lucky with mine in a Black Friday sale at a decent price.