Re: what did you do to your motor bike today? I went the cheap route and got the $190 4 stroke kit from 80cc Motorboys in Canada. http://www.80ccmotorboys.com/ I did have some problems with it though: http://motorbicycling.com/showthread.php?t=37322 The kit is pretty good for the price, considering that it is a 4 stroke, but the DAX kit is probably much better. You get what you pay for, and if all someone can afford is $190, then it's a start! I haven't given up on 2 strokes yet. I just wanted something a bit more simple and reliable right now. .