I agree with this installation.The upper control arms can be done anytime.You can install the upper control arms and spindles then when the motor is in with everything and I mean everthing on the cart you can attach the spindles to the lower ball joints and finish the brakes.Be sure your cart is strong enough to hold everthing.And yes it doesn't take long to install everthing this way.The worst paqrt is doing the steering column.Dood Luck