<HTML>i am questioning as to whether or not i should drop an additional $350 (from ww.themopedjunkyard.com or from www.stevesmoped.com) for a 21cc upgrade on my 92 tomos golden bullet ttlx. salesman says it will go an additional 12-20 mph faster and will have substantial increase in acceleration. that sounds really really tempting. i was just wondering if anyone else has heard of or has one of these jobs installed on their ped and what they think of them. let me know. if i had my credit cards on me i would have already had it ordered. i'm already $1500 in debt. shhhhhhhhhhhhh.