Welcome to The Forum!!

The first thing to do is see if you can get the nuts off the bolts. (to make it easier, remove the diving board first - it sucks to pull the last bolt and have the board drop into the deep end)

As long as the existing bolts are in good shape, you can go on-line to find a matching base for your board.

If the bolts are bad or you can't find a matching base - there are other options.

I'm trying to keep this short, so ask if you need more info.

Happy swimming and diving this season!