Fold down rear seat brackets??

The more I look at it the more I think I'm just gonna pass on the fold down seat and just do a standard seat back. I think I'm gonna stretch and widen some factory replacement tubs and repair the bracing . Don't really care what back seats in it just was hoping I could use the factory seatback I still had.

I really wish I could go back in time a slap my 16 year old self an not do some of the stuff I did. The car was a factory bucket seat car with the fold down with power windows and I cut it up and tossed the seats .