The failure point on a 1991-era house isn't usually the frame - it's the opener. Houses built in that window often still carry their original chain-drive opener, now well past its working life, bolted to a bracket sized for a lighter door than what homeowners want installed today (insulated steel, sometimes with glass inserts). We've opened up more than one of these garages expecting a clean swap and found the header bracket undersized for a heavier door, which means reinforcing before the new door goes up, not just hanging it. The other spot we watch is track clearance - newer builds sometimes shaved ceiling clearance tighter than older construction, which can rule out a standard-lift track and push the job to low-headroom hardware. Neither of these is common, but on a house built in 1991 it's common enough that we check both before we quote, not after we've started.