The 4.2L from the Trailblazer OR Envoy would have been a better choice, but if you compare the MPG ratings between the 5 cyl and the 8 cyl I would say the V8 is the better pick. Doesn't have to work as hard, and would probaly end up with the same gas milage or God fobbid Better MPG's . Just my .02
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2004 Hummer H2 " Metallic Red "
20 inch Mojave's (Teflon)(325/60/20) BFG A/T's
MagnaFlow kitty back...Hypertech Tuned..Music to my ears
HCMI Member 50043