Big Block Advice Needed

I can't answer your question if the dominator and tunnel ram will lower your et a half second.
Maybe add a solid flat tappet cam, it might help
But I can say that is one cool car !
Thanks! Had some fun with it this summer, first event was the Langley Loafers old time drags at Mission Raceway where I won nostalgia gas class, second event (and my completion date and goal) my son and I ran in the Canadian drag week, Miles of Mayhem where we placed third in bracket class. Good times!