I got the seat braces. Everything under the feet will be new. I’d like to go with buckets but the wife likes the bench. The bench that’s in it is likely a loss- feet are rusted away and needs to be reupholstered so will probably just replace.dont for get to order the outside seat braces . also if you have buckets seats you need the inner brackets as well. I bought my floor pan in left and right section for the very reason you mentioned.
I ended up ordering the 1 piece, much more economical with truck freight when combined with other items and couldn’t get the halves from the place that had other stuff I needed. I may split it down the middle to install. It’ll be a few weeks before everything’s here and I do a mock up before cutting out the old floor and will decide then the best way to proceed.