Vintage Edelbrock twisty torker for standard big block Chevy rectangular port. This is there original tarantula design. It's a little dirty & has patina, great for that vintage rat rod look but a simple bead blasting would make it look like gnu. No port work, no coolant pitting, no sloped out mounting holes, no cracks or welds. All threads are good, it has two professionally installed thread inserts on the T stat housing. No split bungs. Wash out before you install it.