[ypsimatt22]

Yea any carb box that was on a competition car is going to have the four holes in the front and rear because jet changes on the Holley would be a huge pain in the butt if you cant get the fuel bowls off. Im not even sure what the repop boxes typically look like but the one repop I found online doesnt have them. Theres a slight rake to the box also it is shorter in the front and there are tool marks under the lip around the top of it like they used a pneumatic flanger to make it the lip.