I just got my Offy 4 bbl intake in the mail and I was checking it out. Apparently, only 6 bolts on each side actually go to the block. There are a bunch of extra bolt holes that look like they belong but they don't go anywhere. Is this right? Should I just bolt it up with the holes that go to bolt holes and just go with it? The order is for 49-53 intake and I can only assume I got the right one but is an older style intake going to have a different pattern? Any feedback is appreciated.