I have a vacuum set up on my CAV, I run 4x48IDA, vac advance MSD billet distributor +6al box, Audi power brake booster, vacuum controls for heat and AC and it all works perfectly! It is setup with a box under the turkey tray that has 8X 3/16 rubber vacuum hoses- one from each runner under the throttle plates- to the "box", then one half inch i.d. rubber hose to feed booster and necc.vacuum controls for heat etc, one more take off for distributor. I was thinking about installing electric vacuum pump but found it unneccesary . I f any one wants pics of setup, email me with your email and I will gladly send pics, I cant figure out how to put them on this site!!!