slant 6 to 318 conversion

So... I'm dry fitting my 318 block to my 72 k frame.... and one things not right. It seems like a weird problem to have. The mounts look like any of the pictures I've seen say they should. But there are seemingly 2 issues. The drivers side mount location on the k frame seems to be oriented further forward than the passenger side, but the mounting locations on the block look to be relatively symmetrical. Also, aside from that, the mounting locations seem to be too wide. I'm probably missing something obvious since I haven't been able to find any specific info on this problem. Does anyone have any insight?