Help!! Insurance not paying to fix!!!

I was wondering if anybody has any ideas to help. I have a 1967 dart 4 door sedan with a cracked windsheild. I can't seem to find a glass shop that will get the parts and make the repairs! I even called the glass companies that came up on this web site, and they won't fix it!
I located a windsheild in Wis. $325.00 & $115.00 shipping.
I located lockstrip $225.00 NOS
Gaskets are not made yet but prototype gasket comming in this week.
We drive are Darts full time with full coverage.
My Insurance agent keeps telling me I have a 45 year old car. I keep telling him he knew that when he wrote the policy and had me give him pictures of the car and appraisals before policy was written. He and his good hands people don't remind me how old my car is everymonth when I go into the office and give him a premium check! I am also expected to keep paying premiums while I fight this out. It seems the good hands people only want to pay so much and that leaves about a $80.00 shortage (shipping), and they don't want to pay for the lockstrip!
If you notice their good hands are always empty and held open!
Does anyone have any ideas???? I'm lost!
Everything would be golden if I pay for all parts, find someone to install and pay, then the Insurance company will reimberse me. I've been layed off for 7 months. I don't have the funds to pay first.
Ideas???? Please?? Help!!!