Anyone ever have a currie 9 inch rear housing and 31 spline axles in their g body? I had the fluid changed at a place called gearworks who did the rearend in my car. They wanted to drill a hole and install a drain plug right in the middle of the housing behind the sway bar. Ended up not doing it because the housing had some hard steel liner. Just drilled a hole in the rear cover area and used air to blow the rest out via fill hole by the pinion then out the hole drilled towards the bottom of the rear cover area. He had a couple more 9 inch housings looked almost like mine but were very thin and could drill a hole in the bottom of the housing with ease but mine was a different story. Anyone have any experience with this?