Costzon Mini Cooper manuals

hi my Name Is Amy Bailey!! I live in Greenville South Carolina! My husband is wanting to build a go baby go car for our son who has several disabilities and has a terrible time using his legs
We would like to purchase the Costzon brand Mini Cooper could some please help with providing a manual or guide to converting this type car!! Thank you so much!!!
Or we would even be willing to purchase car and pay someone to convert it for us
Please let me know if you know anyone in Greenville Sc area that could do this for us

Amy Bailey