OK, I've been trying to figure out which carrier I have but the more I read, the more confused I get. My carrier is solid with no holes anywhere in it except for one small one next to one ring gear bolt. It looks like this one on ebay(2ND PIC), but it has 4 cross holes and I read that opens have four and gov-loks have three. Can anyone clear this up for me? My 14bff came from a '75 K20.