Really enjoying following your progress. Thanks for taking the time to post. I've got a feeling you'll be happy with the single carb set up. You would have probably needed a very high rpm stall speed converter for the tunnel ram set to work properly. Especially at the lower engine speed.
And for the record, your truck takes an excellent photo.
1966 C-10 Short Stepside HiPo Step-by-step ~ and on-going resto build in the Project Journals