Those are the wrong spindles for burgard a-arms. Burgard requires a banshee spindle that needs to be reamed. A stock blaster pinch bolt style ball joint does not have a bottom nut. Looks like he just took those tapered ball joints and installed them in a non tapered hole. Used the nut to hold them in and tightened the pinch bolt to close the pinch slot. I would not personally run them like that and I wouldn't be surprised if the taper was a bit chewed up from being in the wrong spindle. To top it off you will not be able to run the front drum brakes with banshee spindles. The good news is that the banshee spindles have mounts for hydraulic calipers. You will need banshee hubs to mount rotors. So converting to hydraulic front brakes will be a bolt on upgrade. Add a complete banshee front brake system to your order when ordering spindles. You will need banshee hubs, calipers, rotors, lines, front master cylinder in order to convert.