2001 Nissan Frontier no spark to plugs

Electrical problem
2001 Nissan Frontier 6 cyl Four Wheel Drive Automatic

i was 4 wheeling and swamped the front end of my nissan in about 3 ft of water I have a cold air intake and it died instantly I imediatly shut truck of but it took about 8 hours to get someone to pull me out water level was about 3/4 of way up headlights but back end was out of water tops of both front seats were out of water I have replaced all fluids and spark plugs but I cant get any spark in my plugs and I dont know where to start other than distributor cap which is clean and dry