Check pictures out of the cars with Milodon pan may be the same issue..Correct on the info your seeing. I’m putting my money on that they did mock up on a 73-76 car with flipped steering components not like 67-69. They are all the same situations except for that 67-69 has different steering and motor mount pads. K member dimensions tunnels are the same so I’m guessing they missed that part.. hell I didn’t even know they where different till I had the issue. I’ll be reaching out to Holley about this issue.
