I did both the fastrax drop and roll and the camo extreme on my 08 D-8 163...one of the sleds I ride with is a heavily modded vertical escape,(slp race porting, head, slp twins, custom valved shocks ect.ect.) before i did the drop and roll these sleds were pretty much dead even in all conditions...both running the stock track the sleds came with...he installed the 3.0 pitch 2.5 extreme, no drop and roll just 7 tooth drivers, i did the drop and roll with stock drivers and the 2.86 pitch 2.5 extreme, once again both sleds pretty much identical in all riding conditions..until we hit our first deep day...3ft. of freshies, his was a trenching fool(and this sled used to rock on deep days) , mine on the other hand, creep anywhere, jump right up on the snow and go...we both decided after much discussion and swapping back and forth that this was a direct result of the better tunnel clearence of the drop and roll..it evaculated snow thru the tunnel much better allowing the sled to get on top much easier...in 2 ft. of snow..not noticable..but it was in 3 ft...so yes the drop and roll is a good install..but only if you live to ride the super deep days..thats where it shines....