Thanks for all the replys -- I did go through all my vacuum lines and did find some that were not correct. Plugged them in, and it fires right up.

However, now the idle is way too high, like 1800 rpm or so, and when I shift into gear, it drops way down, 500-600 maybe. I have to really stomp on the brakes, or it'll just take off when in gear.

I'm thinking a leak between the brake servo and the intake manifold? Too much air in, and no vacuum assist perhaps?