So the big problem was manifolds weren't official GM manufactured. They did not match up well with the head ports. What a wiast of time and frustration. In the end I had a GM intake and a GM exhaust manifold I was able to install the combo and slowly torque them in. The truck ran wonderfully. I reconfigured the vacuum fittings so that my brake booster hose came straight into the heat riser portion of the manifold along with two other vacuum lines T'ed off. The brakes were better than ever before.
If anyone is replacing manifolds I recommend that you take care to insure that they are GM parts.
