Started 5.2 magnum swap/65 Dodge Dart,/6 4spd convert..but....

Feel stupid/ Dimentia maybe...LOL Started to break in cam open pipes.
Ran good. Didnt have time light on. Had float issues with electric fuel pump,got that fixed.
Went to start again today to finish break in.... no spark...WTF.
Checked all wiring from starter relay,fusible link, ballast resister.
Changed coil cause got hot. same result......
Only thing could think of is ecu box fried?
It was a good unit I thought........ ran 10 minutes. gauge in car showed charging alternator.
Battery new? All 4 fuses replaced...LOL

Please show my stupidity somewhere.... done for nite

D.