The Maxx: 800-HP Dmax-Swapped H2

Hummer on Steroids The Hummer H1 Humvee has been one of the most capable factory off-road vehicles ever produced, a purpose-built, go-anywhere vehicle that the […]
DW  GMHSP

Turbocharged Upgrade: HSP Diesel Duramax S300 Turbo System

Making 500hp in a 2001 to 2010 GM Duramax is easy, right? While easy may not be the right word, the Duramax is a very […]