Could you use any 1999-up bench seat in the old square cabs 87-96? Friend has a spare that is really nice from his 2006 and I wanted to use it in my 91. Is it direct bolt in?

 

If it was me and the seat was close by. I would just grab a tape and measure your mounting points and the new seat. The super duty and the f150 is wider. But that doesn't mean the seats are.

Just going from experiences with putting new stuff in old it's probly gonna require a little work to fit

 

Find out and let us know, I wanna yank my bench and slap a couple leather captains chairs in

 

This guy has done a King Ranch conversion on his truck. Hopefully it helps you out. I would try to reuse the old brackets. I hate drilling new holes in my trucks.

King Ranch Seats in 1997 F350 - Diesel Forum - TheDieselStop.com

 

The simple answer is NO.

I currently have a 99+ seat sitting in my 95. Not one bolt hole even lines up