I have recently got back into the blazer world and am almost done building my off-road bumper will post pics when finished I am planing out my lighting and am going to run 2 30 inch led light bars at 420 watts each now the math comes out to it requiring 70 amps total draw I still have the stock alternator and all or the other electrical stuff is stock other then a aftermarket head unit and led dash lights so my question is is it to much power for the stock alt to handle

 

Look up the AD244 alt swap.