1997 5.9L Magnum Roots Supercharging and Fitment
The Blower Shop, BDS and Teague offer 71 series air to water intercoolers. Unless you're going to be running your blower at high boost/RPM's, I'd pass on running one.
I'd recommend cutting a double keyway in the crank and harmonic balancer and run full groove main bearings to provide full time oiling to the rod bearings.