i have that kit on my cj7. it is by far the best mod that i have done to my jeep (actually my hubby installed it). it is sooooo much better than the carburetor. no more carb adjustments, tough starts, rough idle. if you don't have the time, skill, or access to to the parts for a 4.0 head swap, it is a great alternative. from what the hubby says, it is a very easy install.