318 runs real load and shakes like crazy

Fuel, Air, Spark.

Fuel: Is the fuel good? It's obviously getting fuel so make sure the gas is good. If it starts to smell like a combination of bourbon and turpentine the gas is bad and it will make the car run like crap.
Air: it's obviously getting air. And I'm not hearing any valvetrain noise. So this seems good. Look for any vacuum leaks.
Now Spark: This can be a combination of things.
- How do the spark plugs look?
- Has the distributor been looked at? The ignition coil? It does look newish from the video but it's hard to tell.
- Now this one is a possibility, and this is no reflection on your skills or anything, that being said I've done this before because I was tired and exhausted*: Are the spark plug wires on the correct cylinders?

*Yeah, I got the wires crossed before because I wasn't working on all cylinders after working on the car for 7 hours and it was 4 am in the morning.