The biggest concern would be the wire from the Alternator to the battery. Most Alternators can be indexed. So clear the wire and route away from heat would be more important than the Alternator itself. The alternator only get hot when under a big load. How often do you expect to need those 60 amps? Running A.C.? Big sound system? Alternator has a "fan" often the pulley to cool the internals. Air flow matters, swamp heat is only an issue if the air can't flow. Fixing a melted un-fused wire sucks.
