Hello.
There are a number of vendors that carry the original headlining for your car. Remember that the original was not very thick and sturdy because the headliner never takes much abuse (except from kids) and is not required to withstand any pressure from sitting on it. The new headlining vinyl is strong and will stretch a bit for installation, but will appear thin and lightweight. If you like, I can send you a sample of what the original headlining should be. Let me know.
Best Regards,
Ron