There are plenty of supercharged Rangers. Currently the only kits out there are the EE
kit and the RP Caster
kit but both are only for the SOHC 4.0 engine. The EE kit uses its own blower and manifold while the RP kit uses the Eaton M90 supercharger from the early T-bird SC. There are no kits out for any other engine.
What do you mean EMS? Do you mean ECU or PCM (both meaning computer)?