In my opinion, a super charger would be a good set up for a wheeler. There is no turbo lag, but a small turbo wouldn't lag much. It would fit well in place of the ac compressor. My brother has an extra Eaton m90 for a 3.8 super coupe and an intercooler. It fits well in the engine bay and the intercooler would be good on top of the engine. Relocate the battery to the drivers side and the intake on the passenger side. I also feel the supercharger would be a bit better in terms of taking damage from dirt getting sucked in.
Also, a super charger wouldn't require major changes to the exhaust and would be a simpler set up with less piping.
If I had the money and time, that super charger would be on my 4.0
98' Grand Cherokee 4.0, 3" lift (2" BB and upcountry springs) 32" BFG All-Terrains
Aluminum Rad, Hella 500ff's, Cobra CB, 102" whip, IRO exhaust, Super 40 Magnaflow Cat, Kenwood deck, Kicker DS65 speakers, Sony Xplod amp, Kicker Comp10s in a sealed box