Newbie here from Louisiana

Hi I am new to this forum. But not new to the MOPAR family. I have a 1972 Duster with a 440 bore .20 over with KB pistion 10.5 to 1 compression elderbrock aluminum high performance heads 640 lift cam high rise intake and a 850 holley carb. 2500 stall in the tranny with a shift kit. Have a 8 3/4 narrow rearend with 3.55 gears. Never been to track so have no clue what it will run. Car was a 6 cylinder. It sports the 340 decals but i cant fool a true MOPAR guy when I crank it up tho :D