318 capabilities??

ok so i have a 70 duster.. i have a stock 318 that i was gonna put in but i dont want it to be a complete slug.. i was wondering if a stock 318 with a good cam, air gap, good carb and a set of headers would run 12s with a 125-150 shot of nitrous.. or if the 318 could even handle that.. thank you the rear gear is 3.91.. un sure on the tire size..