A '76 with T-tops will have Hurst Hatches. Hurst Hatches is American Indian for "leaks water and rots floors," so you will probably have some work there to deal with. Also, I don't think there were any structural changes made for the Hurst Hatches, so some sort of stiffening modifications will be in order.
Good Luck!
Shiny Side Up!
Bill
'72 442 "Inamorata"
www.FQuick.com/ProTouring442