Hi, don't think you will have any problems taking the cougar, My first duster was 1970 340 stock block/balanced/3-angle valve job/750 holley/410 posi-8-3/4/904 with cheetah valve body with mickey thompson ss street/ ran in 13:50's 1/4 mile, had a guy(my rival) with a 351c in a 1969 mustang that his best time was 14:02
