Lots of guys run Ford 9in in the rear when they SAS because they get them with the front axle they buy so they match bolt pattern and width wise.
If you get a 9in it will most likely be from an old Bronco or F-series and it will be a little wide for your truck. The smallest ones are in old cars like Crown Vics and Town Cars from the 80s.
What rear end do you have now? 7.5 or 8.8? Depending on what type of power you put down I would recommend an Explorer 8.8. It would be just as strong as a 9in but it will be the right size. Plus they come with limited slip and disc brakes (and sometimes sway bars and even traction bars) and they are way cheaper than a 9inch.
2010 Toyota Tacoma Access Cab 4x4 Auto V6
2000 Ford Ranger 2WD 2.5L & 1976 Ford F150 Supercab 2WD 302