They make a tool to collapse door hinge spring for removal. It is pretty cheap. Most parts stores online sell them less than $20 . The pin is another story .Not sure.
I have my hinges off but they are not close at hand (@body shop) The tools are a little sketchy because they are now very cheaply made (mine is about 30yrs old) and very universal. I have done many door hinge pins over the years but not on a Pantera .
The spring has a tendency to pop off the end. Maybe bending the tip a small amount might help. Scratching the paint might be avoided with a little duct tape. Good luck.
Jerry Sr