I purchased a pair of upper and lower doorhinge assemblies from Ford for my 95 Cobra. Apparently the pins and bushings are non-serviceable parts and you have to replace the hinge assy. These things have a stud on the back side that goes through the A-pillar and attaches on the inside with nuts. Has anyone replaced these before? I'm trying to figure out how toaccess the nuts without tearing out half of my interior and dash. Any tips or secrets? Any help appreciated.