David,
Do not start that car again till you get that firing order corrected.
That video plays a sound of an engine with a misfire or bad intake valve.
Pull all of the plugs, put a timing light on number 1 wire, lay all of the plugs with the wires plugged onto them on the valve covers, then crank and set your timing to about 8 degrees advance. Lock down the distributor, then start checking the firing order while installing the plugs.
Rob