1, im not 100% sure. i do know the springs are .95. my tuner/shop guy told me everythign is perfect and all he did was change the oil and seals. and set up the suspension. 2. again, im not 100% sure. i bought the bike from a very reputable person. the 2nd in command of sport bike track time (STT). and i am certain his word is golden. 3. i love the woodcraft rearsets, but the pegs are shit fro gip. i slipped off a couple times on huge lean angles and at a very high rate of speed. so i put the valtor moto's back on cause the peg is much grippier. ever have yuor foot slide off while at 80% lean angle at about 95+mph? pucker moment for sure, i had to change my underarmor. 4. i just got the dyno sheet out, this is 107.03 (i thought it was 114) dynod at the wheel tuning the ecu. no yosh box under the seat or race tail. gsxr ecu's can be tuned, unlike my honda. so no need for a yosh box or power commander. let me know if you want any more info or have any more questions. i have 3 other potential buyers on other forums, but at this very moment i really dont wanna sell it. i do, but i dont. cause ill miss it next year and i know its a great bike and has always treated me well owning others in the corners.