Lean burn or not ? And Desmog a T-Quad ??

With the numbers...ive found that its a 78 version ( for canada ) on a 400 c.i. but i want to rebuilt it but dont know if i can run it with a eletric ignition...want it for my 71 cuda and i dont know the carb details on a non smog car TQ and a smog lean burn one...