^Yes the kit shown above from Dos Cycles is a really excellent kit and reasonably priced. The Puch 70cc treats for the people Version 1 piston port kit I've also been having surprisingly good results with. You must run synthetic oil at 2% because all newer kits in general are poorly cast nowadays you need max protection especially during break in and you must time low (do not do what I did a year ago on a previous Maxi I used to own and time high because you will run too hot and seize quick) and above all run a temp gauge. Yes the temp gauge is $50 but it can save you and your new kit a lot of grief! Chamfer your ports and gap your ring to around .014" to .015"