Bonneville America Forums Forums Off Topic Discussion Forums Lounge buying new bike

well i have debated this for a long time and think i am going to take the plunge. i have been trying to make my america into something it just is not. i am going to see what kind of deal i can get on a thunderbird with the big bore installed before i pick it up. my america is my first bike and it was a college graduation gift so i am not to sure how much play there is on motorcycles. i know cars there is room but i dont know about bikes. i want to trade the bike in so should i push for money on trade in or money off the bike? any info you all have i would appreciate. thanks