In general, yes! for true classic and collectible cars a car with matching numbers always brings in more money. but...with our cars, not unless its a Ram Air, the difference might be marginal. Unfortunately most classic car buyers lack knowledge on how to spot a numbers matching drivertrain and are more interested in first impression and/or restomods. I'd say the split may be 30/70 of buyers that actually value numbers matching. Me, myself would turn away from a non munbers matching bird. But that's me, b/c I've been into Firebirds for 32 years.