Ambulance 579 was towed to SIV Ambulances in Langhorne, PA in mid-May, 2020 to be fitted with a new, 2121 Ford F-450 chassis. The SIV wasted no time, and less than two business days later, the patient compartment was off the old chassis and the new chassis was being prepared to be painted.  Remounting, where the worn out chassis is replaced while the costly ambulance box is reused, is a prudent practice that is far more cost effective than replacing the entire ambulance.