Little issue (btw. any super 6 stuff not ur not using?)

Bet your coil is shot, that or your ignition box. but bet it is the coil.

had a Duster with a /6, Offy, 4brl intake, Holley 4 brl, 390 cfm if i remember correctly, MSD Blaster II coil, Mopar Performance Dist, Clifford headers duel 2" Dynomax mufflers and an H pipe, Western Auto long block, 273 gears, got 11 flat in the 1/8th, and 22 mpg around town 25 mpg on highway.