Stock steel crank out of a pickup (old truck, mine was a 68)
Scat rods $325 (you will have this or more in machine shop labor & stock rods)
Icon forged pistons.
The nitrous combo went 12.4 with the wrong converter to run on motor.
I didn't realize you had a stick, I don't see one reason for a 727 when a 904 will do the job and faster. The tunnel ram.... most I've seen were not needed for what they were on, a good single plane and carb won't leave anything on the table IMO