I don't doubt that a setup could be made for less than the original factory cost. And for more experienced 'home mechanics' I would suggest you post what you have done. My biggest deliberation in such a situation is not knowing a person's mechanical ability. I get especially concerned when I know it is their children (daughters, like mine no doubt) who are riding the machines. For that reason, I always opt for stock rather than modifications. In the wrong hands, modifications could lead to serious injuries or even worse. In the right hands, such as yours, they usually work marvelously. I just don't want children used as 'guinea pigs'.... ya know.... If an adult wants to experiment and put themselves up for trial and error, that is their choice and I totally respect that. I just prefer to go with caution when it is a kid that will be riding the machine... I am sure we can both agree on that
Safety first for the children.
Honestly speaking, I would love to see what type of setup you are using. I always like learning something new. Thanks man!