More informations:
Detomaso put spread and square intake manifold depending the years, europeen or not, etc ... see thread: pantera.infopop.cc/topic/correct-carb-manifold-combo.
So, just look a your intake manifold to see if it's a spread or square.
Holley 4165 and 4175 are a spread bore carburetor, I think you can put on a Detomaso spread bore intake without any modification, to confirmed.......?