Yay! Success over a big obstacle.
Camaro’s had different heater core and heater core covers for big and small blocks. Being that my Camaro was originally a 6 banger, it had the small block setup. But when you drop in a big block, the heater core lines would hit against the valve covers and rub and pull. The big block heater core setup flips the heater core around and runs the lines in the center of the heater core cover, away from the motor. (Notice original holes to right of picture)
Hence doing the mod to make a small block heater core cover into a big block one.
Make measurements, get a new heater core, and install the big block heater core bracket, and drill some big holes into a painted heater core cover and you get SUCCESS 
Now to reassemble the heater core and box, and to finish rewiring under the dash. New battery, and engine fan should be here this week.
Wheels and tires have been ordered. Tires will be here this week, wheels in about 2 weeks :drool: