When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I don't know about the Mach 1, but on my GT, all I had to buy extra was 1 range colder plugs, some anti-freeze,and a tube of black RTV sealant. I also bought an Autometer boost gauge.