I am looking for a complete rear suspension unit for my 1980 F4 van. It has been off the road for over 4 years now. It is now in my local garage, and we have discovered that the rear Rt swing arm is bent. This is a casting, and essentially will be impossible to straighten out. It will easiest to replace the whole rear axle assembly rather than just the bent one. Does anyone have one or know of one?