I have the same toothbar, only the 48" version. I love it. It really helps to dig.
2 suggestions: use anti-sieze on the bolts if you intend on taking the toothbar off in the winter
and I put the nuts on the outside because I also have a few exposed threads. I think the most wear would occur inside the bucket, not outside. This is again to aid in taking it off in the winter.
Dave R.