Component parts for a truck, truck type or bus type vehicle shall mean, any component part shown in section 106(1) not listed in this section which is common to trucks, truck type vehicle when repaired or replaced, and the following:
1. Major component parts: a. frame or any portion thereof or, in the case of a unitized body, the supporting structure which serves as the frame;c. cargo compartment floor panel or passenger compartment floor pan;d. transmission or transaxle (replaced); e. motor or engine (replaced); 2. Minor component parts: c. each fender or quarter panel;35 Miss. Code. R. 7-06-05-107