Shock towers are another important structural area that should be closely examined. The towers can bend and, without the help of a Monte Carlo bar, travel inward over the years. After 40 years of service, the shock towers can also develop cracks that are difficult to see. Big-block engines and hard use accelerate the process. The previous owner of this car didn't help matters any by cutting open the shock tower with a blow torch just to lubricate the control-arm cross-shaft.