I got the front ladder brace installed in my s14 today.
Had to ditch a heat shield by the downpipe. Installed M10 rivnuts to the rails to hold everything in place. I put a washer between the brace and the body on the left, front most bolt. This is because the S15 has some extra stamping fit this bolt (can be seen in the S15 pics in the first post). For the holes, I found a step bit to be the easiest way. Don't forget to paint the drilled areas to minimize rust in the future.
Gallery of pics:
https://imgur.com/a/4vEMSYX