Purchased Jeep/AMC inline 6 cylinder. The air intake mounting flange on the adapter is designed for 5/16" studs, so I had to enlarge the mounting holes for the 3/8" studs to fit my air intake. Also, I had to grind some material for the carburetor gap on one section. I had to modify the part as I did not use it on a GM engine nor did I use a 2-barrel Hollley carburetor as stated in the description. It took about 5 minutes to make the changes and if you change the original carburetor setting when