I run 4.10s with my stock 215s (Yippie!)
I had 3.07s and swapped to these, huge difference in power, gear ratios are alot closer and pretending my MJ is a drag car is fun. Much more "power"
Wheeeling its awesome, don't have to slip the clutch in high to keep it running, and in low its unstopable. On pavement, i can put it in 2 low let the clutch out in frist and slowly apply thje brakes (no gas) and it will start to "burnout"