On a nut and bolt "restoration" that will likely see limited road time I don't think I would. If it is going to be driven, and/or you plan on other mods or non-factory changes exterior color, options etc then I would say yes. It is a definite improvement. I have an e-body hard top and a dart convertible both with sub-frame connectors. The convertible was a dramatic improvement in the rigidity of the car after the connectors were added. The hardtop was not as noticeable but it was an improvement.