Do a search for Ken lambert, Whacker engines, ch ignitions and carrprecision these are all people that cn help. With a little enginuity a hack saw and some simple tools you can start yourself and just buy supplies from above list. You would not want to use the pull start because it is just toooo heavy with a capacitive discharge ignition you can flip the porp with on finger and it will run providing you choke the carb. The engines I mentioned are all weed eater class. The chains saws can be easy also but you have to have the right one.