Yes, you have the original 216 flywheel on a 235 engine. No problem, but you will need to use a 6V starter. Check my most recent PM before you try buying another starter. How did you go about setting the timing when you swapped those ignition parts? The "no start" problem could be something as simple as the ignition timing being a few degrees late. Don't keep grinding on those gears with the flywheel/starter mismatch. The 12V starter will crank an engine with a 6V flywheel, but it's noisy, and it's easy to damage a flywheel ring gear. Then it's very difficult to fix it once the damage is done, involving removing the transmission, clutch and flywheel, and swapping out the ring gear. It's a shrink fit on the flywheel, requiring heating the gear and dropping the hot gear onto the flywheel where it shrinks and holds itself in place.
Jerry