If you mean these holes, they should line up with the ones on each frame rail.
![](https://vvcap.com/img/6HEI5iwUz.png)
Are you trying to install it by yourself? If so, it will be easier if you can support while you get it lined up.
Might also try installing the rear bolt on one side, then the other, then swing it up into place, support it, then try to line the front holes up.