Were is a cheap but quality headliner ive been looking all over and i cant find a decent one for a decent price please reply with some good info please i need it it is the last thing i need for my interior of my 1984 Trans Am

That's an Oxi-moron,..... If you are looking for a quality anything that you can expect to pay for it !

Repro's are being sold with ABS backing,...... You could also remove the original board and have it re-covered at a local upholstery shop. Your other option ( probably the "cheapest" ) is to buy some fabric and re-cover the headliner yourself.

my original board is shot and im not sure what the best budget way to do a headliner is i am just looking for advice this is my first restoration project on my own much less at all