My question is why ?
All that work and time on the 1407/1411 for what gains honestly - Subject has been beat to death on every Mopar site on the web
And the reasons have been stated over and over and over
So many better options
The Edelbrock AVS 2 is one hundred times better in every aspect right out of the box
This time I am using a 1406 it does not have the off idle lean spot. In the past the I made the 1407 work "ok" by making a really crude modification to the transfer slot using a jigsaw blade... but it was never really right.