One of the guys here is using the XV, seems like he has had to customize and modify quite a bit to get it set up... Dont remember his user name, it is a 68 4 door dart sleeper with alterkation... look in the members restorations section...
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.