Well the little Miss. has the bug she has started riding my stand up. " I told her she could not handle it". She did fantastic... I was so proud ......other people at the house asked how long she had been riding I told them about 15 min. She stood right up and was turning right ,left and giving it some juice on the on the flats.Since she has been asking for more. I found a one owner FX-1 outstanding factory condition. He wants 1700 with a trailer...... "not a very good one ,more like a pulling device ".Anyway I might just do it. People say it rides like the old 550 I never had trouble on a 550. I guess she can grow into it. Other than pipe /pump/head up grades what type of intake and ride plate would be suggested?