kaoss
+1y
The only vacuum line that you need is the one to the vacuum advance on the distributor.
Cap the rest of them off. The little rubber caps will eventually fall off, so when your truck starts running like crap one day, check those first.
If you want to "shave" those holes, remember that the intake manifold is aluminum. So if you don't have a way to weld aluminum, trim them off and then jb welb the holes, and take some shake and squirt to the manifold.