Holy crap...I just got my PROMA in today and installed in about 30 min`s....What a sweet pipe this is....Alittle loud but I can deal with,don`t know about the neighbors though...Have to do a few more plug chops to check jetting before I do any WFO runs....70cc kit, Proma pipe,jetted sock carb. needle all the way up, cone type airfilter, 82 Urban.....I`ll get some pic`s up....This things rips through the bottom and big in the middle.....Needs another gear it seems....Single speed...