Greetings and welcome to the site. xboxrox is correct to check the air gap between the signal rotor and the igniter. It's .008-.015 for Denso and .030 for Mitsubishi type distributors. Then check the distributor installation. It could be 180* off if it was installed with #1 piston at TDC on the exhaust stroke instead of the compression stroke. Also double check the plug wire routing. If you got a couple of backfires, you're getting spark but not at the right time.
To get more background info in case it could matter, have you replaced or worked on more than the ignition components you listed?