i have just finished up my first build on the kulana beach cruiser and it works great. my son has a stingray that is in desperate need of an engine and i hear that these are a real pain to do. my first question is does the motor sit onesided in the frame so it will be inline with the rear sprocket? i am a welder and machinist by trade and should be able to fabricate a mount for it. how about the rear sprocket will it mount up with the two pieces of rubber like a normal build or will i need something different to get the sprocket mounted and lined up with the engines sprocket. i am just trying to see what else will be needed for this build if it is to costly with all the extras i may just pickup another bike. thanks guys