225 Slant Six Crank but Won't Start (Fuel but No Spark, Dist. Rotor turns)

FIRST thing to do is get timing right because "that is what" you messed with. You can check timing "on the starter" with a timing light.

Some of the parts stores (O'Reallys) loans out some tools you might check them for a timing light and compression gauge if you don't have one.