Try searching for weber carb conversion. The very knowledgeable here say that if you are going to use your rig offroad, the weber will only dissappoint you and recommend the stock carb. If your only going to use your vehicle for getting to the ski resort, the weber may be for you. As far as the skill level, doesn't sound too hard based on the few who have posted up around here.
Rich

Active duty US Coast Guard helicopter mechanic (IA)
87 Monty
2.6
auto in progress
31X10.50 mudders
ARB
Warn 6000
Many hours of sweat and pain
Previously Badas87-2dr