an engine with variable camshaft timing? I.E. the new 4.2L I-6 that the General is putting in the new Trailblazers/Envoy/Bravada. I plan to put one in my '55 Chevy truck and would like to turbocharge it as well. Don't think the factory ECM will be able to control the engine under boost w/o some serious computer hacking. If the FAST doesn't have this capability, does anyone have suggestions for engine management (that won't cost me an arm and a leg). TIA -Chuck