As you get into them and learn you will understand my statement. Mach 1 package was appearance only. Any model could have the suspension packages and add on did not have to be a Mach 1. I have a 72 vert with staggered shocks did not have to be a Mach 1 it also came stock with NASA hood not just Mach 1. Lots of people are in the dark on the Mach 1.