Don't like the improvised transmission holding device, huh?
The car is a true 70 1/2 TA, originally a RA 3 , 4 speed car.
The block is an IA block, Kauffman Hi ports, Victor,Dominator, 700 lift roller and around 14:1 compression.
Should peak at 725-750ish HP and 600 ft # torque everywhere.