In Don D's OR book he mentions grinding down the center dividers under the carbs to within 3/8". I'm thinking of doing this on my Weiand dual-quad WPD4D manifold. Of course I will remove it when I do. Upon replacement I am also thinking I should block off the cross over too. What are your thoughts? Rich Kinsley '64 Dodge Polara 4dr 318poly w/goodies ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.