Alfetta GT propshaft couplings (donuts)

[euston53]

Hello All, Could anyone help me find front, middle and rear donuts for a 1976 Alfetta GT Coupe driveshaft.Especially the rear.  Highwood Alfa and OKP have front and middle but not the rear. These are the older type and not the same as the post 1977 built cars. Any suggestions would be greatly appreciated. Cheers.