my iroc needs help !

The car run like a champ. 1990 iroc-z28 New yokohama tires new tranny shift kit and 5.7 engine. The only problem is the convertible top. Arizona sun has done a number on the cloth faded and torn not to mention the missing back window ( someone tried to steal it ) . After it going up and down enough times the metal frame broke. now i need the new cloth and metal frame replaced. If anyone knows of a place around Phoenix where I can get it repaired ( CHEAP ) <-- ! I would appreciate it. i could replace it myself but cant find the parts