download your own MA chassis base data here:
https://a360.co/3fZnio7
download your own X chassis base data here:
https://a360.co/3fZpBYd
buy the MA starter kit here:
https://www.amazon.com/s?url=search-alias%3Daps&field-keywords=mini+4wd+ma+chassis&sprefix=mini+4wd+ma%2Caps%2C467&crid=38XE8IQ2LU4SC
Check out the Fusion 360 tutorials here:
http://f360ap.autodesk.com/courses/conceptual-modeling-fundamentals