I Need Help!!!!!!

I cannot get my doors opened!!!! Both my doors on my ' 65 barracuda are seized. I think they both are locked and I have been putting penatrant on them periodically for 2 months. NOTHING. I've been in there trying to figure it all out but the window track on that side is in the way. Does anybody have any suggestions????
can you go in through the trunk and pop the back seat up and out?
Maybe then you can roll the windows down try the latch from the inside?