Big block 383 build!

Texascuda,If you want to keep the stock look you can have another row added to your 2 core to make it a 3 core. I have done this in the past with good results.An alternative would be to find a 24" B body radiator or a 26" C body one and do some cutting on the radiator opening.Your engine and compartment look awsome.
A 26" C-body 3 row is an excellent cooler for these cars.