it is the eaton m62 just like from the EE supercharger kit, I remember seeing the nissan ones and thinking it will fit without many mods, but the intake on it is on the driverside, right? I remember looking at other stock superchargers like the one from the 03-04 Cobra mustangs and even the ford lightnings. The cobra m112 has the intake on the passenger side like the 4.0 sohc v6s so it would be easier to adapt than the nissan one. The main problem is building an intake manifold that will allow you to bolt on a supercharger and have it clear the hood, usually the clearance issue is the pulley not clearing the hood. Anything will work, its just adapting it to what ever engine you have and doing the proper fuel and timing adjustments so you dont melt it.
2005 Ford Ranger XLT 4.0
15.9 sec 1/4 mile, all stock open diff automatic
Now I have a K&N intake, Roush Exhaust, JBA headers, and Xcalibrator 2 91 performance tune. Lifted 7 inches in front, 5.5 in rear, body lift and on 36s!!