6.1 Carb Intakes?

hm, i should ask below question better in my own thread instead of the 5.7. But subject remains the same, interesting for both engine types....

if I decide to go with XV for the 6.1. Do I have to plug the injector holes? A shop who is selling them for 499 USD ( Moes performance) has a describtion what let me think it is one manifold for both, carb and EFI.

http://moesperformance.com/index.php...oducts_id=1693