Anyone use vacuum advance on a gen II hemi cross ram engine? I have the reproduction MP cross ram manifold with removable tops and a pair of 650 cfm Holleys. I wasn't sure where to port the vacuum advance. Should I T together off both carbs? Off one carb? Don't use? The car will see mostly street duty with occasional strip. I have had locked out distributors before on other engines. I am just looking to see if it has been done or could be done.