I run one w/ a CF-DF clutch and like it, a lot less tendancy to stall on the trail. It is a bit slower accelerating but with 4500 lbs. of 4Runner and 116HP, its no big difference. Also the heavier flywheel can soak up more heat to help cool the clutch. No subsitute for gears but I did find the heavier flywheel let me run about 1 gear higher on the trail and keep the engine RPMs lower.