2002camaro

well my car got hit so im taking advantage of situation and getting car completly repainted along with some other stuff but while im at it i want to know how hard it is to switch out the old hard top for some t tops and assuming its easy what all i need to do so any help is apreciated. unfortunatly im on time constraint cus work starts on car soon. but even if i just dont paint old roof and get the t top roof bar painted to be installed later that would be cool i just want to know before i go through all the trouble