best year for GM van

[Qxxx]

I get a little better MPG than Noodly and Matlock, as I believe due to having a minimal low weight build out, and also having the 6-speed automatic. I imagine that transmission helps keep the engine running in its most efficient power range when downshifting, as compared to the 4-speed. Also, I tend to keep speeds mostly down in the 65-70 MPH range.