First off, Don't waste your money.
Yota SAS is good but doing the motor and axles is overly too much $$$ and hassle.
just buy the Yota and make it work for ya. even tho they are too small for an adult American sized person.
(anybody that is above 5foot 10inch and 180lbs or less)
Yes, I test drove one and nothing like sitting on the floor of a Less than Mid sized rig.
(I'm 6foot 2inch)
Check out Trail Tough for their Yota SAS should help ya a bit..
Spendie but well worth it for the Zukiholic in ya..