68 Barracuda Front Side Marker Light

:BangHead:Anyone else have problems unscrewing the socket from the back of the housing on a 68 marker light, I tried liquid wrench, pliers, locking pliers, any insight here is much appreciated, just need to replace the bulb and don't want to damage this light assembly, if the part was an old rusty worn out piece I would understand, but as already mentioned it's NOS. Did Chrysler Tig weld these components together?:BangHead: