Rustler question
 

With the extended Rustler A arms mike sells will the stock half shafts extend far enough to be used or do you need to the extended CVDs

You can use jato driveshafts or the hpi dogbone conversion.

Keep in mind that the extended a-arm set does will require you to keep using the different front and rear offset wheels (if you want equal track width) because the front a-arms are not extra long to compensate for the extended rear width. Just a FYI.