Dana, I do not see any threads in your vendor forum, so I thought I would ask you a question here rather than PM. Maybe this info will be useful to others. I am finishing my 505 stroker motor for my 1968 300 cruiser. Mild cam and highway gears. I am wondering if I should try and use my 4749 Holley carb? Do you know what the cfm is? I am assuming that it may be a little small. Can it be modified to flow more air?