id say a 5-10 pound weight reduction.
....hhmmmmmm high speed virbration...that is yet to be determined. as u may or may not know i broke my shaft recetly. i may have broken or damaged more then my shaft....possibly my tranny
....i hope not...or my diff...hope its my diff and not my tranny i gotta extra diff so thats not a prob. right now i got some serious vibration at 80 and it starts at 65. im super scared to go over 80. now i cuz at like 60...sux
ssoooo...as soon as it get a co-pilot to tell me where the sound it comming from i'll. let u know.
but i can tell u this....60 and below is fun...itwas wwwaayy more responsive and snappy. the torque actully get to the wheels better.