Oil Pan Removal ??

My rear main has a slow oil leak and I am not looking forward to replacing it but I have to do it. If I change my oil about every 500 miles before it loses its viscosity then it doesnt leak. So 66Valiant If you do change your rear main keep me informed on how well the job went and any problems you had. I have heard some positive things and some nightmares about changing it. Thanx